A. oxygen (氧气) B. carbon dioxide (二氧化碳) C. nitrogen (氮气) D. hydrogen (氢气) 相关知识点: 试题来源: 解析 C 正确答案:C 解析:大气的主要成分是氮气(nitrogen)哦,大概占大气总成分的78%左右, 而氧气(oxygen)只占20%左右,剩余的2%由二氧化碳(carbon dioxide)等其他气体组成。反馈 收藏 ...
Carbon dioxide makes up less than one percent of the Earth’s atmosphere. But the gas is very important to life on Earth. Scientists are finding that processes involving carbon dioxide affect our climate in ways that are difficult to understand. Last month, a committee of the National Academy...
百度试题 题目 选择下划线用法错误的选项。 The nitrogen makes up over 78 percent of the Earth's atmosphere, the gaseous mass surrounds the planet. A.nitrogenB.overC.percentD.surrounds 相关知识点: 试题来源: 解析 AD 反馈 收藏
求翻译:Seventy-eight percent of our atmosphere is nitrogen gas. (1)是什么意思?待解决 悬赏分:1 - 离问题结束还有 Seventy-eight percent of our atmosphere is nitrogen gas. (1)问题补充:匿名 2013-05-23 12:21:38 我们的大气百分之七十八是氮气。 匿名 2013-05-23 12:23:18 百分之七十八的...
DThe oceans can absorb 93 percent of the heat trapped by the greenhouse gases___humans release into the atmosphere. And the other 7 percent___(absorb)by the air, land and ice caps, according to the Guardian.“If the ocean wasn’t absorbing as much heat, the surface of the land would...
根据第一段中的“We all think plants were expected to get larger with increased carbon dioxide in the atmosphere, but changes in temperature, humidity(湿度)and nutrient availability seem to have trumped the benefits of increased carbon dioxide”可知科学家原来以为二氧化碳的增加会导致物种变大,但是气候...
Plants release water into the atmosphere through a process called transpiration(蒸发). In the tropics, each tree can release about 200gallons of water each year. The moisture(水分) helps create the thick cloud cover that hangs over most rainforests. Even when not raining, these clouds keep the...
What is half of 2 thirds? How does 9/10 - 2/5 = 1/2? What percentage of people in the U.S. have cell phones? What is an autotriploid? What is ''x'' in 1/6 + 1/12 = 1/x? If 2x + 25 = 35 what is x? What percent of the atmosphere is made of nitrogen?
Makes up 78 percent of Earth's atmosphere by volume.问题补充:匿名 2013-05-23 12:21:38 null 匿名 2013-05-23 12:23:18 讓高達 78 % 的地球的氛圍。 匿名 2013-05-23 12:24:58 組成78%地球的大氣由容量。 匿名 2013-05-23 12:26:38 按體積占 78%的地球大氣層。 匿名 2013-...
a北方人很大气的 Northerner very atmosphere[translate] aHere, in Robinson Crusoe, we are trudging a plain high road, one thing happens after another 正在翻译,请等待... [translate] athank you for the picture, i love you so much, not for sex. i really love you 谢谢图片,我爱你非常,不性...