What is the atmosphere of Mars mainly composed of? A. Oxygen and nitrogen B. Carbon dioxide C. Hydrogen and helium D. Methane 相关知识点: 试题来源: 解析 B。火星的大气层主要由二氧化碳组成。选项 A 氧气和氮气不是火星大气层主要成分;选项 C 氢和氦不是主要成分;选项 D 甲烷不是主要成分。
Human activities such as burning fossil fuels (coal, oil, and gas) for energy, deforestation, and industrial processes release large amounts of carbon dioxide, methane, and other greenhouse gases into the atmosphere.”,即全球变暖的主要原因是人类活动排放温室气体。
About 600 million tonnes of methane are released into the atmosphere each year.Estimatessuggest two-fifths of these emissions come from natural sources, mainly rotting vegetation in swamps. The remaining three-fifths of emissions come from sources tied to human activity. Emi...
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Over a 20-year period, methane traps about 80 times more heat than carbon dioxide, but only lasts in the atmosphere for about a decade instead of hundreds of years like carbon dioxide,according to the EPA. About 30% of the world’s warming since pre-industrial time...
The heat is released back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane carbon dioxide, trap some of the heat, 【小题3】 (keep) Earth’s climate warm and habitable.【小题4】 this process, Earth could not sustain life. However, the “man-made”...
In 2017, methane accounted for roughly 10 percent of all human-driven greenhouse gas emissions in the U.S., according to the EPA. While it isn’t the most abundant greenhouse gas in the atmosphere, it is among the most powerful.
The atmosphere is made up of a number of different gases. Oil Oil paint used by an artist Gas (countable) A hob on a gas cooker. She turned the gas on, put the potatoes on, then lit the oven. Oil Any of a group of liquid edible fats that are obtained from plants Gas (uncountable...
8.According to paragraph 3, what is the significance of the fact that the rocks of Earth's crust now contain an enormous amount of calcium carbonate? A. It explains why Oparin and Miller believed that Earth's early atmosphere was methane rich. ...
Eris' atmosphere is too thin to be considered a true atmosphere and appears primarily to be composed of methane that sublimates from ice on the... Learn more about this topic: Dwarf Planets in the Solar System | Overview & Composition ...