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What does “meteorologists” refer to___. A. people who study the earth’s atmosphere and its changes B. people who are in charge of weather forecast C. people who broadcast weather on TV D. people who study the E. arth’ s rocks the history of its development 相关...
百度试题 结果1 题目What is the main component of the Earth's atmosphere? A. Water. B. Oxygen. C. Nitrogen. D. Carbon dioxide. 相关知识点: 试题来源: 解析 C。地球大气的主要成分是氮气,其次是氧气等。反馈 收藏
Earth's Atmosphere: Earth's atmosphere is usually split into five primary layers based on the temperature profile in each: the troposphere at the bottom, then stratosphere, mesosphere, thermosphere, and exosphere. Other specialized layers also exist within these, such as the ozone layer, ionosphere...
Earth's atmosphere at the end of the Triassic contained the same kinds of gases it does today -- nitrogen, oxygen, carbon dioxide, water vapor, methane, argon and other gases in trace amounts. The concentrations of some of these gases, however, was very different. ...
doi:10.1029/2010eo460005Spencer R. WeartJohn Wiley & Sons, Ltd
What is the main gas in the earth's atmosphere? A. Oxygen. B. Nitrogen. C. Carbon dioxide. D. Hydrogen. 相关知识点: 试题来源: 解析 B。本题考查对地球大气主要成分的认识。氮气是地球大气中主要的气体。选项 A 氧气含量次之,选项 C 二氧化碳含量较少,选项 D 氢气在大气中含量极少。
Earth has an atmosphere. The atmosphere protects us from harmful rays. What is the atmosphere made of? A. Water vapor B. Gases C. Soil D. Rocks 相关知识点: 试题来源: 解析 B。解析:地球有大气层,大气层保护我们免受有害射线的伤害。大气层是由气体组成的。选项 A 水蒸气只是大气层的一部分...
What is the main gas in the earth's atmosphere? A. Oxygen B. Nitrogen C. Carbon dioxide D. Helium 相关知识点: 试题来源: 解析 B。解析:地球大气中的主要气体是氮气“Nitrogen”。氧气“Oxygen”含量次之;二氧化碳“Carbon dioxide”含量较少;氦气“Helium”含量极少。
Atmosphere The gaseous mass or envelope surrounding a celestial body, especially the one surrounding the earth, and retained by the celestial body's gravitational field. Mood An instance or spell of sulking or angry behavior A friend's visit lifted him out of his mood. Atmosphere The air or ...