Air consists mainly of nitrogen (about 78%) and oxygen (about 21%) with traces of other gases such as argon and carbon dioxide. It is the invisible, tasteless, and odorless substance we breathe. On the other hand, the atmosphere is a complex system encompassing air along with water vapor...
百度试题 结果1 题目1. Airconsistsmainly of nitrogen and oxygen. (consist) 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
athe emergence of 诞生 [translate] aAir is a mixture of gases, consists mainly of nitrogen and oxygen, by volume, about 78% of the nitrogen in the air, oxygen and inert gas accounted for 21%, accounted for 0.94, accounting for about 0.03 of the carbon dioxide, water vapor and impurity...
air - a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air" air current, current of air, wind - air moving (sometimes ...
While in popular terminology "air" is often conflated with "oxygen," air actually consists of oxygen and a mixture of other gases, such as nitrogen, methane and carbon dioxide. Air is an important part of several essential cycles that also make life on E
1. a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "airpollution" "a smell of chemicals in theair" "open a window and let in someair" "I need some freshair" 2. travel via aircraft; ...
[83–85]. Food consists predominantly of proteins, carbohydrates, fats, and other organic compounds. Therefore, the C cycle and nutrient cycles are inextricably linked. Like C, as discussed in the next chapter, chemical species of N and the other nutrient elements are essential and toxic, ...
Fresh air volume to provide breathing oxygen is much less than actual fresh air demand of an area. Air consists of approximately 21% oxygen and 78% nitrogen. The remaining 1% consists of other gases. Only about one-fourth of oxygen in air is consumed during breathing. Forty liter per minute...
英语分数表达问题Only one-fifth of air consists of oxygen.氧气只占空气的1/5.5.About two thirds of the students attend the meeting.大约2/3的学生都参加了会议.为什么上面一句话分数用连字符而下面不用?
How can so much oxygen diffuse through the thick walls of the mound? Even the pores in the wall are filled with water, which almost stops the diffusion of gases. The answer lies in the construction of the nest. The interior consists of a large central core in which the fungus is ...