The atmosphere is mainly composed of nitrogen and oxygen. What percentage of the atmosphere is nitrogen? A. 21% B. 78% C. 99% D. 50% 相关知识点: 试题来源: 解析 B。解析:大气层主要由氮气和氧气组成,其中氮气约占 78%,氧气约占 21%。
结果1 题目What percentage of the Earth's atmosphere does nitrogen make up by volume? A. 21% B. 50% C. 78% D. 99% 相关知识点: 试题来源: 解析 C。原因:It makes up about 78% of the Earth's atmosphere by volume.。反馈 收藏 ...
Explain why too much nitrogen is bad for humans. what is the importance of nitrogen for living organisms? What is nitrogen fixation? What is nitrogen pollution? Explain why nitrogen is important. How do we use nitrogen in our biological processes? What is the importance of nitrogen fixation? W...
___mentioned above,the atmosphere mainly consists of nitrogen and oxygen. A.As was B.As it was C.What was D.It was 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 A是正确选项A是“如上所诉”的固定搭配,但不像1搂说的,as绝对不是做主语.该句子的主语是the atmosphere.B...
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? What is the percent compisition of each element in magnesium nitrite? How tall is 58 inches? What is the probability that X is no more than 10?
Atmosphere The dominant tone or mood of a work of art. Air A colorless, odorless, tasteless, gaseous mixture, mainly nitrogen (approximately 78 percent) and oxygen (approximately 21 percent) with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases. Atmosphere An ...
Living things require nitrogen for their cells to function and, furthermore, we are virtually steeping in the stuff since our atmosphere is made up of 78 percent nitrogen gas. Although nitrogen's lurking basically everywhere, it's not abundant in the Earth's crust, and it's difficult for li...
Nitrogen is an odorless, tasteless, colorless nonmetallic chemical element which appears in great abundance in the Earth's atmosphere. It also appears in a number of other compounds, and is a vital component of life on Earth for many organisms. In addition to inhaling nitrogen with every breath...
The Earth's atmosphere is about 78 percent nitrogen, 21 percent oxygen and the rest is trace gases including argon, methane, nitrogen oxide and carbon dioxide (only 0.04 percent). The current average year-round temperature for our planet, according to NASA data, is 58.3 degrees F (which is...
One of the most common GHGs, CO2, is found in the Earth’s atmosphere and, along with nitrogen, oxygen, methane, and other gases, is part of the planet’s air. CO2 helps trap heat on Earth, like a greenhouse traps heat to grow tomatoes in cold climates. But too much of it can ...