1. What are the three major ecosystems of the Earth?2. When did China join the Ramsar Convention on Wetlands? 相关知识点: 试题来源: 解析 Wetlands. forests and oceans. In 1992.根据第一段第二句 可知地球三大生态系统是森林海洋和湿地 根据第三段中“ The year of 2023 is the 32nd year that...
C.对话配对。()1) What's on the Earth? a. There are rivers, oceans,(d)2)What did you see in the picture?land and forests, people C)3)Are the blue parts oceans?and animals.()4) What should we do to help b. Yes, they are.the Earth? c. We should plant more trees. D....
The four oceans on Earth are the Pacific, Atlantic, Indian and Arctic.These four oceans make up about 70 percent of the planet. The southern portions of the former three oceans merge at the Antarctic region, but this area of water is not generally considered an ocean. The Pacific Ocean flo...
What are the major carbon sources on earth? Which gas is more important for global warming: carbon dioxide or methane? Why? In which carbon pool does extra carbon accumulate? Liter & Waste? What is the name of the flux from carbon in the atmosphere moving to carbon in the ocean?
What are the major carbon sources on earth? Which of the following is not believed to have been a component of the early Earth's atmosphere? a. N2 (nitrogen gas) b. H2 (hydrogen gas) c. CO2 (carbon dioxide) d. O2 (oxygen gas) ...
x( ) 1) What's on the Earth?( )2) What did you see in the a. There are rivers, oceans,picture?( ) 3) Are the blue parts oceans?land and forests, people and animals.( ) 4) What should we do to help b. Yes, they are.the Earth? c. We should plant more trees.- d. I...
A. oceans on Earth B. the stars in the night sky C. the shape of our moon D. the planets around our sun()2. What do the labels(标注) tell you? A. the size of each planet B. the colour of each planct C. the name of each planet D. the size of each planet()3. The ...
Focusing on the hydrosphere, it encompasses all of Earth’s water, which is crucial for life. This sphere includes surface water, such as rivers, lakes, and oceans; groundwater that saturates the soil and rock beneath our feet; ice and snow found in polar regions and mountain peaks; and ...
The five major oceans of the world. Patterson map projection. Map: Caitlin Dempsey. Size of oceans versus seas An oceanrepresents a far larger body of open water than a sea. Oceans are vast bodies of water that cover over 70% of the Earth’s surface, with an average depth of 3,800 ...
So molecules like this ended up on Earth. In fact, what we call meteorites are pieces broken away from comets and asteroids that came in our atmosphere and left their extra-terrestrial organic matter on the surface of primitive Earth.这样的分子最终来到了地球上。事实上，我们所说的陨石是来自彗星...