In 2012, Huawei began to plan its own operating system “Hongmeng”, and in May 2016, HarmonyOS formally established the project. On December 16 last year, Hongmeng OS officially released the Beta version for mobile phone developers, which also means that the timetable for the commercialization of Hongmeng system on Huawei mobile phones is further shortened, and it also means that China’s exploration of its own ecological operating system has begun. Landing. But since its birth, the controversy surrounding Hongmeng has never disappeared. What does Hongmeng mean for tens of millions of developers in China? Is the opening of the HarmonyOS 2.0 source code worth the effort to follow up? What is the commercial feasibility of Hongmeng’s ecology? They are all questions to be solved before developers. Wang Chenglu stated in the above-mentioned meeting that Huawei will never make another Android or another IOS. It is of no value to build the same operating system for smart terminals. Hongmeng operating system is a full-stack modular design, no matter it is vertical or horizontal, it is completely decoupled. “All of our connections today are shallow connections, and we can only shake hands. The operation of a program requires data, computing power and IO capabilities. All connections today are just the next simple instructions. Hongmeng operating system is not only able to carry out Simple connection, we can achieve data integration, distributed database, distributed file system, distributed computing, so that all connected devices are like one device.” Wang Chenglu said. As one of the developers of the Hongmeng system, the head of the Labo Lado team, Yuyong, told the China Business News reporter that the Hongmeng system integrates distributed capabilities, which is attractive to developers. Yes, from networking to mutual discovery of devices, in the past, it was basically a headache for every developer. Especially in terms of discovery capabilities, other system platforms could not be so “convenient”. “We have been making children’s application products, and are also thinking about how to transfer products from mobile phones, tablets and other platforms to cameras and screenless drawing boards.” Yuyong told reporters. According to the reporter’s understanding, Harmony 2.0 has about 4.6 million lines of key code, which is equivalent to 30% of Android 10 15.25 million lines. At the same time, there are about 18,000 key APIs (application programming interfaces), which is equivalent to more than half of Android 10.36 million. The size of the installation package is reduced to 60%-70%, and various devices such as mobile phones, tablets, wearable devices, TVs, and sensors can be used. For the Hongmeng system, Huawei’s goal this year is to develop 300 million Hongmeng devices this year, including 200 million Huawei-owned devices and 100 million external devices. But technology may not be the biggest challenge Hongmeng Eco currently faces. Looking at the mainstream operating systems currently on the market, PCs have long been occupied by Windows, while mobile terminals such as mobile phones are divided into two parts: Android and iOS. The development of the operating system is only the first step, and the ecology is the top priority to determine whether the system can continue, and the time left for Huawei Hongmeng’s ecological construction is very urgent. At the same time, while Huawei is speeding up, its opponents are also speeding up. Google released the first test version of Android 12 on May 19 and stated that it has made the biggest design change in Android history. Google said that there are currently more than 3 billion devices in the world are using the Android system. In addition, Google will also work with Samsung to launch a rebuilt Wear OS platform. The Tizen OS used on Samsung’s previous wearable devices will be integrated with Wear OS. At the press conference, more than 10 Chinese mobile phone brands, including Xiaomi and ZTE, all stated that they would be the first to upgrade the Android 12 system. In contrast, although Huawei has stated many times before that it hopes other mobile phone manufacturers will join the Hongmeng ecosystem, no mobile phone manufacturer has publicly stated that it is adapting to the system. Yuyong told reporters that at present, some people are willing to try the Hongmeng system, and some are waiting and watching. “For commercial considerations, everyone will pay attention to the current installation rate of Hongmeng. The ecological construction has left the ecology, and the operating system is useless.” Yuyong told reporters. How to make consumers accept the use of Huawei’s platforms and applications in a short time? How to make the head application cooperate with Huawei? They are all questions facing Hongmeng. “There is still a big problem with low-frequency, rigid-needed products in some subdivisions, and we also need to gnaw hard bones.” Huawei insiders told reporters. “The biggest challenge of Hongmeng’s ecological construction is the current time and scale itself.” Yang Haisong, vice president of Huawei’s consumer business AI and smart full-scenario business department, said at a partner summit earlier that successful foreign operating systems generally use five To build a successful ecosystem in seven years, Hongmeng will strive to complete this process in about one year. This will be the biggest challenge for Hongmeng’s ecological construction. In order to promote the landing of HarmonyOS, Huawei announced on the 24th that it will launch the HarmonyOS University Talent Cultivation Program. Wang Chenglu said that at present, more than a dozen colleges and universities have adopted it as an elective course, but in the future, it is hoped that more colleges and universities will make it a required course.

Australia – kangaroos Kangaroo is a symbol that just hearing people think of Australia. This country is also known as “the land of kangaroos”. This species mainly lives in grasslands, savannas, forests… Theo BBC For a long time, Australians do not have the habit of eating kangaroos. However, about a decade ago, they started eating it because it’s good for the environment. Australians are encouraged to eat kangaroo meat. Photo: Hypro. The country’s ecologists say the number of kangaroos has exceeded the control level, affecting the environment. In 2010, Australia had only 27 million kangaroos. Six years later, the number has grown to 45 million. Dishes with kangaroo meat can include steak, meatballs, barbecue, sausage. Some people have said that kangaroo meat smells like beef but is tougher, has a stronger smell than lamb. In addition to kangaroos, Australians also eat the emu bird (Australian ostrich), which is also the symbol of this country. Denmark – swan The swan is a symbol of Denmark and often appears with beautiful images in fairy tales. In many European countries, eating this animal is also prohibited. However, this is not a problem for the Danes. Eating swan meat is not illegal in Denmark. Photo: Hello National. Share on Esquire , Mario Batali, who once ate swan said its meat is deep red, lean. Some people say the meat of this species is smelly and chewy. However, the Cr8ive1 account of a cooking blog countered. This person said that after processing, swan meat is quite soft. You just need to keep the heat on medium, no need to cook too thoroughly. “Its taste is very interesting and controversial,” this person shared. However, you will find it very difficult to find recipes for swan meat online. Finland – brown bear The ancient Finns worshiped brown bears. There are 200 names for this species in their language. Finns today are used to calling nalle, otso and mesikämmen… Some other common names in the past include mettä, metsä, otava and mörkö. Bear meat is expensive food. Photo: Npr. However, nowadays, you can absolutely find restaurants serving brown bear meat in Finland. It can be used as a steak or burger. In this country, about 150 bears are hunted every year. The hunter has the right to own it. Hunters often keep the feathers and sell the meat. However, bear meat needs to go through many rigorous tests before reaching users to avoid worm diseases. Usually, bear meat is sold whole, not retail. Some people have said that the bear paw cooked with goose fat is the most famous. Each piece of bear meat usually costs about 160 USD. “You’ll need a glass of red wine to savor the meat”, blog owner A Luxury Travel to speak. Saudi Arabia – camel Not many parts of the world love camel meat like Saudi Arabia. According to the World Atlas Camel meat is a staple of the country’s diet. Statistics for 2020 of Global Trade Mark shows that Saudi Arabia is the largest consumer of camel meat (113,000 tons), far ahead of the UAE (2nd place, 35,000 tons). Camel meat is consumed in huge quantities in Saudi Arabia. Photo: The Food Ranger. Camel meat is high in protein, low in fat and has almost no saturated fat. It contains many amino acids, iron, glycogen that help support the growth of nerve cells. There was a time when the MERS epidemic raged, camel meat lost its place because studies showed the animal was an intermediary that spread the virus to humans. Spain – bulls For a long time, the people of the country of gaur have not hesitated to eat the meat of their national symbol. The Spaniards are famous for letting the bulls fight each other to the death and then eat the meat. The Spanish-style stewed oxtail is very famous. Photo: Travel + Leisure. “The meat is very tough. We have to cut it first and cook it with red wine overnight. Then it needs to be stewed for another four hours before serving customers,” said a local restaurant manager. If you go to Spain, you should probably try the stewed oxtail. This is considered the most delicious dish from the gaur.

Subconsciously, Chelsea Wood dreams of becoming an ocean biologist, studying the lives of dolphins or diving deep into the sea to solve the mystery of the vast animal world. She has a special fondness for sea snails, spending time watching each little animal slowly moving inside the mini “laboratory”, a wooden basket. It took more than 20 years, Chelsea Wood, then known in the world of marine biology at the University of Washington, realized that the childhood world in a snail shell as a child hides life from the larvae. The flatworm species Cryptocotyle lingua (a common fish parasite), in the naive thinking of a young age, looks extremely adorable and has the charm of two black-eyed dots. Wood couldn’t take his eyes off the bizarre creature, and then constantly questioned their origins, so much so that he said, “One day, I’ll know who they are.” Going to college, Wood spends most of his time in the lab with his … stupid friends. Wood’s biological world lives on its host, like an outcast in the animal universe. Apparently, the scientific community is indebted to Chelsea Wood (et al.), When the researcher initiated the movement to preserve the parasites has always been estranged by science. The microscopic, “parasitic” world must make up nearly half of all known animals on Earth, but not all species are harmful to the host, including humans. The parasites make up nearly half of all known animals on Earth. Imagine one day in the next century, 10% of parasites disappear due to climate change, there is no suitable host, what will happen? Wood is concerned, but we’re indifferent. The International Union for Conservation of Nature only lists a few species of mussels or lice parasites as “high risk”, while the parasite world is extremely large. Chelsea Wood said that, neglecting the parasite, is accepting failure in biological science research. Scientifically contested, critically opposed the views of anyone who supported Chealsea Wood. Biology preserves the fallacy, that we are taking slow steps … but surely to explore the parasite world, not forget. A few support Chelsea Wood, believing that the achievements in parasitic research open up potential for breakthroughs in medicine, ecology and the history of species development. The charm of the parasite lurks within the ancient genetic resources to evolve, from the tiny “super evil” crustacean ready to kill the fish’s tongue to the wasps with venom that paralyzes the brain of cockroaches. We still envision creatures swung, stained and frightened, but the parasitic world impresses in their own way, and holds a key part of all species’ lives. Many, but not all Humans are superior animals, but share the same fate with the vast majority of other species such as lions, zebras or even fish and shrimp. That is, we all become hosts of many parasitic groups, even though humans do not show hospitality to them. Science believes that hundreds of different parasitic species have evolved to adapt to the body, and then attach their lives, including many generations to come, to the human body. Chealsea Wood doubted, from the time she was sitting in the university lab, about the parasite’s ability to “grow like a mushroom” – a moment when she thought of herself as a nutritious buffet. energy for any hunger in the biological world. Big idea met together. When ecologist Skylar Hopkins (University of North Carolina) defined the concept of parasitism, Wood seemed to open his eyes. The nature of the parasite is an incompatible symbiotic relationship between species, in which one species is a parasite, one is a parasite, the other is a host or a host. Just imagine this simple: species of parasites are not wild “race arms” like hunting – being eaten, but the trick of choosing a “leisurely” life with a big partner. Wood, and then Hopkins, foresaw that nature doesn’t like emptiness, and if given the chance, something evolved to fill that void. This becomes the foundation for the two scientists to mobilize a wave of in-depth research on parasites towards preventing the endangered threat of many species. New England buffalo leech suddenly disappeared for the past 10 years. Life on Earth formed inside a mixed bowl of soup, with primitive drops of Coacervate, making up countless creatures. The parasite thus evolved, over billions of years, from a single-celled microorganism to today’s complex vertebral body. Amateurs will be shocked if they know that parasites exist everywhere, from parasitic fungi, parasitic worms, to parasitic birds, even demon bats with their favorite “food” being the blood of other animals. The oblivion of science made Hopkins speak, and like Wood at first, received only the shake of his head. The Wood-Kins couple did not give up, but quietly enlarged parasite conservation research groups in the US, then spread to Europe, starting to implement a global plan in early 2021 with the media front: Journal of Biological Conservation. Ten years of tracing parasitic science, underwater or on land, are frustrating days when Wood-Kins has only kept two “ancient” data samples from the 1940s. Death and death – the host dies, the parasite dies, without any recorded evidence. The endangered rare dwarf pig in the foothills of the Himalayas made Chelsea Wood and Skylar Hopkins discouraged to learn that this pig-like blood-sucking lice have hardly disappeared. And what makes Wood-Kins want to give up most is his ambition to eradicate a parasitic louse on the California Falcon, or the New England buffalo leech that has been suddenly missing for the past ten years. Normalization of relations One winter night in December 2020, Skylar Hopkins received a long email with concerns about the world of parasites. How terrible would that biological universe, if one day disappear, be? Hopkins quietly painted a pale picture: the parasite is not worrying, only afraid that the ecosystem will “explode” without the parasites. Some people consider the female parasite needs to adjust the population, limit the individual quantity of the species to keep the balance for the ecosystem. Some people assume that no parasite means that many species lose their food source. Hopkins believes this, because some parasites transform their hosts to evolve, manipulate the “mentality” of new owners, turning new hosts into good prey for other species. Hopkins called this a talent for hypnosis, she discovered in the horse mane worms (Nematomorpha) specialized in cricket parasites, thanks to the substance capable of destroying the nervous system that prompted the owner to voluntarily jump into the water and drown. The host dies, the horse maneworms will escape and begin a new cycle with the next victim, while the crickets become food for freshwater salmon. With Chelsea Wood, humans do not rush to a universe without parasites. In many countries like the United States, the disappearance of some intestinal parasites has caused many confusing autoimmune diseases. Thinking explains it in a way: the immune system evolved along with an “association” of parasites and protozoa, so losing this association begins to attack itself. That is why many people with Crohn’s disease (chronic trans-walled enteritis) have sought a cure when rebalancing the intestinal ecosystem with some parasitic species. Horse mane worms are capable of hypnosis, causing the cricket host to commit suicide. Obviously, the movement Wood-Kins initiated, which made even the hardest of people more or less happy. Dr. Bobbi Pritt, for example, famous at the Mayo Clinic for his “anti-parasitic” view, is always busy carrying blood tubes containing dozens of malaria parasites, looking closely at the diseased brain tissue. Toxoplasma curvature to nest, or cure ulcers from sandfly bites. Blog page “Poisonous, Crazy but Beautiful” was born, towards the medical point of view is to remove pathogenic parasites but need to dig deep into research and be ready to preserve when needed. It seems that Wood and Hopkins have successfully conveyed the message: we do not need to love parasites, but should “normalize” their relationship when there are many hidden parasitic mysteries to nature and species themselves. people. With mother of nature, understanding first and then knowing what the next step should be …

Ancient corona virus illustration, 25,000 years ago. The current COVID-19 pandemic has claimed the lives of more than 3 million people and shows how vulnerable people are to the genetically modified corona virus. However, this threat seems to have occurred since the early days when humans had to fight these dangerous viruses. “There are always viruses that infect humans,” said senior study author David Enard, associate professor of ecology and evolution at the University of Arizona, USA. Viruses are actually one of the main drivers of natural selection in the human genome. That’s because genes that increase the chances of the pathogen’s survival are more likely to be passed on to new generations. ” Using modern tools, researchers can detect traces of these ancient pathogens by precisely identifying how they promote natural selection in today’s human DNA. Accordingly, this information can provide valuable insight to help predict future pandemics. Enard said: “Almost always is when things that happened in the past are more likely to happen in the future.” Using information available in public databases, Enard and his team analyzed the genomes of 2,504 people across 26 different human populations around the world. When corona viruses get inside human cells, they attack the cell’s machinery to replicate. This means that the viral success depends on its interaction with hundreds of different human proteins. Researchers magnified a set of 420 human proteins known to interact with the corona virus, 332 of which interact with SARS-CoV-2, the virus that causes COVID-19. Most of these proteins help viruses multiply inside cells, but some help cells fight viruses. The genes that encode those proteins mutate continuously and randomly, but if the mutation gives the gene an advantage, such as a better resistance to the virus – then the gene has a chance to be passed on. next or selected higher. Indeed, the researchers found that, in people of East Asian descent, certain genes interacting with the corona virus were selected. In other words, over time certain variations show up more often than expected. This set of mutations may have helped the ancestors of the human population in this region become more ancient antiviral by altering the amount of protein produced by the cell. The genetic variations encoding 42 of the 420 proteins they analyzed began to increase in frequency about 25,000 years ago, the researchers found. The spread of beneficial variants continued until about 5,000 years ago. This suggests that the ancient virus continued to threaten these populations for a long time. Viruses cause pressure to adapt “Viruses exert some of the strongest selective pressures on humans to adapt, and corona viruses have probably been around since,” said Joel Wertheim, associate professor at the Faculty of Medicine at the University of California, San Diego. long before man existed. However, it is difficult to say whether the virus that caused this evolution is the corona virus, but it seems to be a plausible theory. David Enard agrees that the ancient pathogen that harmed our ancestors may not have been the corona virus; instead, it is possible that another virus that has happened to interact with human cells in the same way that corona viruses do. Another group of researchers recently discovered that sarbecovirus, a family of the corona virus that includes SARS-CoV-2, first evolved 23,500 years ago, at the same time as variations in the genes that encode the proteins related to the corona virus have appeared for the first time in humans. Findings of the sarbecovirus virus were also published in bioRxiv on February 9 and have yet to be peer reviewed. While these findings are compelling, they do not change our understanding of which populations are more likely to survive SARS-CoV-2 infection. Although, there is no evidence that adaptation of this ancient gene protects modern humans from SARS-CoV-2. Enard and his team now hope to work with virologists to understand how this adaptation helped ancient humans survive exposure to this protozoan strain of the corona virus. The team also hopes that such ancient genomic studies could eventually be used as an “early warning system” for future pandemics. David Enard adds, although we clearly see the impact of this ancient virus on human ancestors, future generations will not be able to see traces of SARS-CoV-2 in the genome. our. Thanks to vaccination, there is no time for the virus to promote evolutionary adaptation.

That equates to 500 liters of water. This is the highest daily loss of water of any terrestrial animal. Elephants lose more water when the weather is hot Elephants are inherently endangered, dehydration from hot weather can lead to lower birth rates, loss of milk to young elephants and death from dehydration. Elephants drink hundreds of liters of water per day, but it is not clear how climate change will change their water needs as of now. So in the new study, researchers led by conservation biologist Corinne Kendall looked at five African savanna elephants (Loxodonta africana) at the North Carolina Zoo. Over the course of three years, the team fed the elephants six times with deuterium – a heavier version of hydrogen, harmless, water-soluble and traceable back in the liquid the elephant was released. The scientists routinely took blood samples for 10 days after feeding the elephants with deuterium to see the remaining amount each time, thereby calculating the rate of excretion in the elephant’s body. The results were “staggering,” Kendall said. At cool temperatures (between 6 ° C and 14 ° C), males lose an average of 325 liters of water per day. But at about 24 ° C they lose an average of 427 liters, and sometimes go up to 516 liters, the team wrote in the Royal Society Open Science. 400 to 500 liters of such water is equivalent to 10% of the total water in the elephant’s body – or up to 7.5% of the body mass. One elephant lost nearly 9% of its body mass in just one day, says Rebecca Rimbach, an ecological biophysiologist at Duke University. However, because elephants continuously replenish lost fluids through drinking, eating, and metabolism, the elephant’s actual daily water loss is lower. In general, elephants must drink water at least every two to three days to avoid “dangerously high levels of dehydration,” Rimbach said. Worryingly, as global temperatures get higher and higher, elephants will need to drink more water. But also due to rising temperatures, water scarcity, water holes dry up, and water-rich plants become more difficult to find. Study co-author Erin Ivory, behavioralist at the North Carolina Zoo, said this double effect could also exacerbate conflict between wild elephants and human populations, when elephants attack the season. membrane or destroy groundwater infrastructure, violent confrontations that can be fatal for both humans and elephants. And the elephants that not everyone knows On average, the ear sizes of an African elephant and an Asian elephant are very different. The African elephant’s ear is three times larger than the Asian elephant’s. African elephants tend to use their long ears for reasons such as signaling or protecting others. Females spend their entire lives with their families including mothers, grandmothers, aunts, sisters and daughters, an adult female elephant often leading the party. Adult male elephants prefer to live a single life. Both African and Asian elephants use their ears as a conditioner to regulate their body temperature. The elephant’s tusks are mainly from … incisors An elephant’s tusks grow from their front teeth throughout their lives. The tusks of an adult elephant can grow 7 inches (17cm) per year. Ivory was used to find salt, water and plant roots, remove bushes, clear paths and were sometimes used in combat. In addition, they are also used to mark trees to establish an elephant’s territory. Despite having large ears, the hearing of an elephant is very poor. They can live up to 70 years. Their spout has no bones. More than 150,000 muscles and nerves provide their hose flexibility. Additionally, an elephant fills its hose up to 5 liters of water and then pours it into its mouth to drink. The elephant listens with its feet and ears. This large mammal can drink up to 80 gallons of water in a day.

12th grade students AT.1 Gia Dinh High School in Biology class. Illustration Ecology (Biology grade 12) is the part with close knowledge, easy to deduce, so it can be called “easy”. However, the amount of knowledge in this section is very much, so if not codified, it will be “difficult”. Ecology section consists of 3 chapters, 11 lessons, students need to systematize knowledge and understand ecological terms. Specifically in Lesson 35 Habitat and ecological factors , in Chapter I Individuals and biomes , students need the system of ecological factors to include Infertility factor (physical factor and chemical factor) and the existential factor (the organic world and the relationship between organisms). The example in the reference year 2021 Question 87: Which of the following ecological factors is the infertility factor? A. Worm. B. Light. C. Worms that eat rice leaves. D. Rice plants. We can easily know that answers A, C, D belong to the existential factor, and answer B is the physical factor – the infertility factor. Besides, we need to understand about ecological limit and ecological drive. In the ecological limit, it is necessary to know the tolerance interval, the favorable interval, the lethal point, the positive point and we can adopt the example of the ecological limit of Tilapia for easier understanding. Students need to be able to distinguish ecological drive and accommodation to avoid confusion we can remember accommodation is just a place of residence still Ecological drive shows the way that species lives. Next, we need to note about the adaptation of the organism to temperature, it is necessary to understand the two Principles of Becman and Alen. Becman’s Rule tells us that “Thermostats live in temperate regions larger body size compared with animals of the same species or closely related species living in warm tropics. We can remember quickly “Body size: animals in temperate> tropical animals”. About the Anlen rule “ Tropical animals that live in temperate regions have ears, tails, and limbs usually smaller ears, tails, and limbs of similar animals living in hot regions ”. Can remember quickly “ Sizing of parts: tropical animals> temperate animals “. Students in grade 12AT.1, Gia Dinh High School are making mind maps for lesson 35 One of the content that frequently appears in the exam is Lesson 40 Biomes and some basic features of biomes. First of all, they need a system of relationships between species in a community. Example from 2021 references Question 89: In biomes, which of the following ecological relationships belong to the supportive relationship between species. A. Parasites. B. Inhibition – sensitization. C. Competition. D. Symbiosis. When the systematization is easy, we can immediately choose the answer D. At the same time, it is necessary to understand relationship forms and take illustrative examples to easily remember. Test papers often give specific examples asking what relationship it is? Example from 2021 references Question 95: During the breeding season, females in the stork population compete for a favorable place to nest. Here’s an example of a relationship A. competing for the same species. B. supporting the same species. C. Assembly. D. cooperation. Based on the title “female individuals in the stork population” meaning “of the same species”, they “contested”. , We conclude this is an example of a competitive relationship with a species. So for this type of question, we rely on phrases, keywords, and clauses of the question to make inferences. The next and most frequently appearing examples on the test are food chains and food webs. Regarding the food chain, we need to note that there are two types of food chains: the food chain starts from the autotrophic organism and the food chain starts from the organic humus decomposing organism. In food chains and webs, it is easy to confuse the “number” between the nutrient level and the consuming organism. Illustration : Floating plants -> Invertebrates -> Small fish -> Large fish Floating plants are organisms that produce a level 1 nutrient Invertebrates are a primary consumer but are a tier 2 nutrient. Small fish is a tier 2 consumer but is a tier 3 nutrient. Larger fish are tertiary consumers but are a level 4 consumer. Example from 2021 references Question 103: Feeding the food chain: Rice plants Deep eating rice leaves Field frog Hawthorn cobra. In this food chain, which organism belongs to the tertiary consumer group? A. The hawk. B. The bronze frog. C. Worms that eat rice leaves. D. Cobra. With a clear understanding and clear knowledge system, it is easy to identify the Cobra as a third-order consumer. Through basic analysis of the above contents, we easily recognize one thing: Knowledge of Ecology is not difficult, just systematized by mind maps, images, tables, … then we easily solve the questions in the exam. Please plan to systematize your knowledge with mind maps for the Ecology section to do well the 7 questions of Ecology in the high school graduation exam. Based on the 2021 high school graduation exam illustrative exam questions, we can see that the Genetic Mechanism and Variation 9 sentences (with 1 sentence of high application), The genetic rule has 10 sentences (4 sentences with high volatility 2-sentence population genetics (1 sentence highly manipulated), 1-sentence application of genetics, 1-sentence Genealogy genetics, 6-sentence evolution (1 sentence to apply), 7-sentence ecology (1 sentence and Biology in Grade 11 has 4 sentences. Thus, basic knowledge is 7.5 points, applying 1.5 points low and applying 1 point high. We can see that the content of Biology subject with a huge amount of knowledge, to facilitate learning and review students need to systematize knowledge is essential. If students have a clear study and study plan, scoring 7-8 is entirely possible.

With the People’s Committee of Da Nang City in principle agreeing to the Vietnam Maritime Administration (Ministry of Transport) to research, survey and implement procedures for submerging 200,000 m3 of material in the sea of ​​Da Nang, experts say. There is a need for a careful assessment of the environmental impact (EIA).

Danang’s marine ecosystem is in decline

Associate Professor-Dr. Vo Van Minh, Chairman of the Council of Da Nang Pedagogical University, said that if there is no other dumping site, there is only way to sink into the sea. However, where to sink, in EIA techniques, it is necessary to determine which sea is the safest, least damaging to the environment.

“Currently, the waters of Danang are not included in the group of protected areas, so it can be submerged. However, from an environmental perspective, falling there will certainly affect immediately, especially coral reefs and seagrass areas. These areas are very important for their habitat and breeding grounds for marine life. Surely it will disturb the environment, affect species of marine fauna and flora “- Mr. Minh said.

Mr. Minh emphasized that in the EIA technique, it is only said to minimize to the lowest level, in the permitted level, not say that it is not impacting. Da Nang’s marine ecosystem is in decline, especially the coral system due to poor conservation, tourism and wastewater impacts.

“I want the EIAs to consult with scientists, but if they do not do well, it is dangerous for the environment” – Mr. Minh worried.

According to Dr. Nguyen Tac An, former Director of Nha Trang Institute of Oceanography, in order to carefully analyze the EIA capacity of submerging, it is necessary to understand the dredging method and the submerged technique. It can be said that all the material in the sea when lying still is okay, but when touched and bounced, many problems occurred. Therefore, it is okay to say just taking this place and leaving that place.

Mr. An said that the submergence principle must stay away from sensitive areas such as residential areas, fishing grounds, protected areas and special values ​​of the sea. In addition, when submerged, it is necessary to avoid seas with strong motivations.

“Actually we dumped it, but it will run away. Submerging techniques must be very attentive. Must see if the quality of sediment and chemicals in the area we scraped up is toxic or not. This EIA agency is aware of both. The dynamic maps in Vietnam nowadays all have them. Therefore, when pouring, it must be considered and calculated. The EIA agency will have to take physical samples for testing, calculate the propagation pattern, size, dredging and dredging time “- Mr. An noted.

Mr. An emphasized: Dredging the sea channel is very important for economic development. Dredging cannot be helped. However, how to minimize the impact of the dredger to increase the overall economic value.

Experts believe that when evaluating the EIA, it is necessary to determine which sea area is safe, with the least damage to the environment. Photo: LE PHI

Dredging the sea channel into Tien Sa port will create 200,000 m3 of material and be calculated to submerge in the waters of Da Nang. Photo: TAN VIET

Worry about coral reefs

Talking about the material submerged in Da Nang sea, Dr. Nguyen Thi Minh Phuong, Dean of the Faculty of Environment – Chemical Technology (Duy Tan University), assessed that 200,000 m3 of material is much and will definitely affect the system. marine ecology.

“The affirmation is always going to impact the ecosystem. When we poured like that, we thought it would lie there, but in fact it was not there at all, it had extremely large currents, so it would be swept away. Must see under that sea there are corals or not, because the most fear is the influence of the coral. When pouring like that, the coral cannot withstand the mud, when the water is too turbid, the symbiotic algae of the coral dies and makes the entire coral carpet die “- Ms. Phuong said.

Ms. Phuong further analyzed the great possibility that the sea area is expected to be submerged deep enough that there are no live corals. Most worrying, however, is that the currents will sweep matter around. Especially sediments, if heavy sediments will be deposited, and fine-grained sediments will be swept away.

“Saying a 100-hectare sea area, it will actually wash away very far. The sediment in the dredging site is likely to be fine-grained, not coarse-grained sediment. Fine means it is light, can be washed away, coarse grain is deposited in place and moves slowly. In a period of a few years it will be swept away everywhere and swept seasonally, because the flow changes with the seasons. Wherever the flow is, the coral will die there. The symbiotic algae of the coral needs light, the coral ecosystem is extremely important. And the bottom ecosystem will be temporarily destroyed for a while, then recover “- Ms. Phuong said.

Ms. Phuong added that from a management perspective, any project will have an impact on the environment. If you consider the environmental impact less than the likelihood of economic development, that’s okay, it’s worth the tradeoff.

“Also saying no effect is not right. The impact at sea is difficult to control. If other ecosystems can recover over time, the corals will not, die will die ”- Ms. Phuong affirmed.

177 species of corals around Son Tra peninsula From 2016 to 2018, the Southern Institute of Ecology had the topic “Research on conservation and biodiversity restoration of terrestrial and underwater ecosystems in Son Tra Nature Reserve”. After nearly three years of restoration, the live coral cover increased by more than 10% compared to baseline. There is an increase in organisms living in the reef. The coverage of seagrass beds increases about 20% -30%. According to research by the Southern Institute of Ecology in 2019, the sea surrounding Son Tra peninsula has 177 species of coral belonging to 17 families and 52 varieties. There are also 130 species of fish living in coral reefs, belonging to 32 families and 65 varieties. This sea also has three species of seagrass distributed over a total area of ​​1 ha and 108 species of extremely diverse seaweed. However, the marine ecosystem here is seriously degraded.

Many of the residential houses here use clay mud embryos to build the exterior walls, which are tan, and are integrated with the surrounding mountains and land. They are very different from the Huizhou architectural style of the nearby blue tiles and white walls. They are indeed authentic local features. The interior of the houses is made of wood. The structure, it is said that such a house is more sturdy, and has the benefits of being warm in winter and cool in summer. Wang is the most common surname in the village, and it is said that he has lived here for more than ninety generations. Due to the high mountains and long roads, the village maintains its original appearance. It doesn’t seem to be advancing with the times, but there is a feeling of “delay” with the times.

According to locals, Yanchi Village was originally called “Delay Village”. There is a story behind this name:

Hundreds of years ago, the people in the village lived the simple life of men ploughing and women weaving, day after day, year after year, forming a culture of hard work, relying on the hands of industrious hands to develop in the mountains. Fields, digging ponds, building houses, and building homes. Due to the barriers of high mountains and inconvenient travel, villagers rarely go out and are almost isolated from the rest of the world.

One year during the Chinese New Year, a villager traveled across the mountains and ridges to the Chun’an County to buy things. On the street, he saw people wearing new clothes, and every household put up Spring Festival couplets with lanterns and festoons. It was only after inquiring that this day was the first day of the new year. Back in the village, everyone remembered when they heard his story. They were so busy working every day that they missed the important day of Chinese New Year. When the village chief learned about it, he calmly said, “They celebrate the New Year today and we celebrate the New Year tomorrow. What if we delay it by one day?” As a result, the name “Delayed Village” was passed on to ten, ten after all. Until the 1950s, the name was changed to “Yanchi Village” because it was inconsistent with the spirit of the times.

In ancient times, Yanchi Village was once the place where the “Ancient Huikai Road” passed and was an important commercial road at that time. There are ancient trees in the village, many of which are more than a thousand years old. Among them is a yew tree that is more than 1,300 years old and can be called the king of ancient trees in Xiuning County. The ancient branches are luxuriant, and the roots are intertwined, and the root system has stretched through the stone cracks into the ancient well more than ten meters away.

Passing through the village and passing the pond, the hillside is a patchwork of terraced fields. The ridges are built with stones, one by one, layer by layer along the mountain. It is quite spectacular to overlook from a height, so it is also known as the “Longji Terraces” in southern Anhui.

A viewing platform was built in the village with the best view. Every spring when the rape blossoms bloom, this place attracts a large number of photography enthusiasts to come to collect the scenery. The spear and cannon formation is quite spectacular. The village is not only full of tourists, but also a lot of tents are set up on the school playground. When we came, there were very few tourists to catch up with the rainy days, the distant mountains were hazy, and the rape fields lacked the rendering of sunlight, but they couldn’t hide the magnificent beauty.

Today’s Yanchi Village has become an important stop in the golden route of self-driving tours in Anhui-Huizhou Tianlu. Many self-driving enthusiasts, outdoor teams and travelers come here to experience the original ecology in this ancient village deep in the mountains. The beauty of life and harmony between man and nature.

When you arrive at Yanchi, you might as well postpone it, don’t panic, don’t hurry, and experience the slow rural life for a few days.