Question

What are the most abundant gases in the atmosphere?

Answer 1

Hint : An atmosphere is a layer or series of layers of gases that surround a planet or other material body and are kept in place by gravity. If the gravity on which an atmosphere is subjected is high and the temperature of the atmosphere is low, the atmosphere is more likely to be kept.

Complete Step By Step Answer:
Nitrogen (approximately 78 percent), oxygen (about 21 percent), argon (about 0.9 percent), carbon dioxide (0.04%), and other gases in tiny amounts make up the Earth's atmosphere. Most species utilise oxygen for respiration; bacteria and lightning fix nitrogen to make ammonia, which is needed in the production of nucleotides and amino acids; and plants, algae, and cyanobacteria utilise carbon dioxide for photosynthesis. Living creatures are protected by the atmosphere from genetic harm caused by solar UV radiation, solar wind, and cosmic rays. The present makeup of the Earth's atmosphere is the result of billions of years of living beings biochemically altering the paleoatmosphere.
Nitrogen is the most abundant gas in the Earth's atmosphere. Oxygen is the second most prevalent gas. Both of these gases are made up of two atoms. The atmosphere of the Earth is made up of around 78 percent nitrogen, 21% oxygen, 1% argon, and trace quantities of other gases including carbon dioxide and neon. Nitrogen is found in amino acids, proteins, DNA, and RNA, among other things. Nitrogen is required for all living species' development, metabolic functions, and reproduction. The nitrogen is subsequently obtained by animals consuming plants and other animals. Ammonium and nitrate will be converted to di-nitrogen by other microorganisms in the soil.

Note :
All living species require oxygen gas (${O_2}$) for breathing, and it is a component of DNA molecules. Ozone (${O_3}$) is a kind of oxygen found in the atmosphere of the Earth. By both absorbing and reflecting damaging rays, ozone shields the Earth's surface from UV radiation.