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First of all, the ocean area accounts for more than 70 percent of the earth's surface area, and the types of terrestrial organisms are changed by changes in surface factors and human activities, taking rainforests as an example, 510,000 square kilometers of tropical rainforests are cut down and burned by humans every day, and in the ocean, the range that can be affected by humans is very small, and the species in the ocean are the least affected by human activities. On average, about 1 5 (19 per cent) of the known species in an area are crustaceans, followed by molluscs (17 per cent, including squid, octopus, mussel shells, snails and slugs) and fish (12 per cent, including sharks).
In addition, single-celled microorganisms (protozoa) in the ocean account for an average of 10 per cent of marine biodiversity in a given region; algae and other plant-like organisms account for 10%; annelids accounted for 7%; 5% for sea anemones, corals, jellyfish and other coelenterates; flatworms and other flattened animals accounted for 3%; starfish, suidopode, sea urchin, sand money, sea cucumber and other echinoderms accounted for 3%; 3% for sponges and other porous animals; bryozoans and other bryozoans accounted for 2%; Sea clams and other tepal animals account for 1%.
Other species include "other invertebrates" (5 per cent) or "other vertebrates" (2 per cent). Whales, sea lions, seals, seabirds, turtles and walruses account for only 2% of the "other vertebrates" species. As a result, some of the most well-known marine animals account for only a tiny fraction of marine biodiversity.
To sum up, the place with the most breeding species and the longest protection time in the world is the ocean, and human exploration of the ocean can be said to be still on the skin.
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The ocean was exploited earlier than the rainforest, and the ocean is now mostly understood by humans except for the deep sea. Rainforests are located in the tropics, which were relatively late and largely unknown to humans. There are more breeding species in the ocean than in the rainforest, and the rainforest has been protected for a long time.
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Answer B The Amazon rainforest is known as the "lungs of the earth", and through photosynthesis, it releases 1 3 of the total oxygen in the world every year, profoundly affecting the carbon and oxygen balance of the earth's atmosphere. The Amazon rainforest holds about 23 of the total surface freshwater,23 which has an important impact on the global water cycle and water balance. In the history of biological evolution, the rainforest has become the place with the largest number of breeding species and the longest protection time on the earth, and is known as the "treasure house of biological genes in the world".
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Hello!!! 1 Tropical rainforests affect the carbon and oxygen balance of the Earth's atmosphere.
Every year, large amounts of carbon dioxide in the atmosphere are fixed by plant photosynthesis; At the same time, a large amount of oxygen is released into the atmosphere. Simple chemical reaction formula for photosynthesis:
6CO2 6H2O Light energy chlorophyll C6H12O6 6O2
Tropical rainforests have a powerful role in spitting out the old and absorbing the new, and are known as the "lungs of the earth". If a rainforest is destroyed, a large amount of carbon accumulated in the rainforest will be converted into carbon dioxide and released into the atmosphere, with predictable consequences.
2 Tropical rainforests have the role of promoting the global water cycle and regulating the global water balance.
Forests act like a sponge in nature, absorbing and storing large amounts of precipitation, and returning to the atmosphere through evaporation and transpiration to form clouds and rain. The role of tropical rainforests is even more pronounced in this regard, with about 50 per cent of precipitation in the Amazon basin produced by the rainforests themselves in the region. The Amazon rainforest as a whole holds about 23% of the total surface freshwater, demonstrating its importance to the global water cycle and water balance.
This role of the rainforest can be simply represented in the following figure.
It can be seen from the figure that the water vapor produced by the transpiration and evaporation of the rainforest is not only the source of water vapor caused by clouds and rain in the rainforest area, but also affects the water vapor content of other regions and even the global atmosphere, which can be described as the "hometown of clouds and rain". The destruction of rainforests would inevitably lead to changes in global precipitation.
3 Rainforests are a treasure trove of the world's biological genes.
1) Rainforests are the oldest plant communities in the world, and in the history of biological evolution, rainforests have become the places with the most breeding species and the longest protection time on the earth.
2) Due to irrational development, the rainforest is constantly decreasing. This is leading to an accelerated rate of extinction of rainforest species. Many species that may be of great value to humanity in the future have become extinct before they have been fully studied by humans, and some species have disappeared forever before they are even discovered.
This is a huge loss for humanity. Modern nature conservation ethics hold that human beings should respect nature, and this respect is a moral commitment. The natural world does not exist only as an object of human exploitation and utilization.
All species have a natural right to live. Humans are part of nature. In the long history of life on earth, human beings are only a latecomer, and many other creatures can survive without humans, and human beings cannot sustain life without other creatures.
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ANS: Rainforests are the lungs of the earth!
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Tropical rainforests are the lungs of the earth.
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Sub-question 1: c
Question 2: BQuestion 3: A
Question Analysis: Question 1: People breathe through their lungs, and oxygen is needed for breathing. It is estimated that the Amazon rainforest produces at least 20% of the earth's oxygen supply, which profoundly affects the carbon and oxygen balance of the earth's atmosphere.
For this reason, the Brazilian Amazon rainforest is known as the "lungs of the earth".
Question 2: The Amazon rainforest belongs to all mankind because it has a global ecological benefit, not its economic benefits, and the Amazon rainforest belongs to the sovereign country of Brazil, and secondly, it cannot provide fresh water resources to all mankind.
Question 3: The Amazon rainforest is known as the "lungs of the earth", which profoundly affects the carbon and oxygen balance of the atmosphere on the earth, and the large-scale destruction of the Amazon rainforest has led to an increase in the amount of carbon dioxide in the atmosphere, the enhancement of the greenhouse effect, global warming, the melting of glaciers at the poles, and the flooding of coastal lowlands. Rainforests are the oldest plant communities in the world, making them the most abundant and longest-preserved places on earth.
The widespread destruction of the Amazon rainforest is bound to lead to a significant loss of biodiversity. Tropical rainforests conserve a large amount of water, and the evaporation and transpiration are strong, forming a large number of clouds and rains, affecting the global water cycle and water balance. The extensive destruction of the Amazon rainforest will inevitably lead to the deterioration of the local ecological environment.
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AnswerA The Amazon rainforest, known as the "lungs of the earth", profoundly affects the carbon and oxygen balance in the atmosphere on the earth, and the destruction of the Amazon rainforest has led to an increase in the carbon dioxide content in the atmosphere, the enhancement of the greenhouse effect, global warming, the melting of glaciers at the poles, and the flooding of coastal lowlands; Rainforests are the oldest plant communities in the world, making them the most abundant and longest-preserved places on earth. The widespread destruction of the Amazon rainforest is bound to lead to a significant loss of biodiversity. The El NiƱo phenomenon is caused by abnormal changes in sea temperature and has little to do with forests. Forests have the role of conserving water, and the large-scale destruction of the Amazon rainforest will inevitably make the supply of water sources in the Amazon River unstable.
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Regional geography, China's natural resources, China's climate, China's agriculture, China's rivers and lakes, China's topography, China's administrative territory.
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