EVERYDAY SCIENCE

Detailed explanation-1: -The primordial earth’s atmosphere was reducing in nature, consisting of gases such as methane, ammonia, carbon dioxide, hydrogen, and water vapor.

Detailed explanation-2: -Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.

Detailed explanation-3: -It is known that the primitive atmosphere of the earth was composed of carbon dioxide, carbon monoxide, nitrogen and water, that is, the slightly reduced gases, and that carbon monoxide is a major carbon compound found in extraterrestrial environments like comets.

Detailed explanation-4: -Earth’s original atmosphere was probably just hydrogen and helium, because these were the main gases in the dusty, gassy disk around the Sun from which the planets formed. The Earth and its atmosphere were very hot.