SSC MTS EXAM

Detailed explanation-1: -The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of other gases, too, such as carbon dioxide, neon, and hydrogen.

Detailed explanation-2: -POLLUTANTS IN THE TROPOSPHERE The troposphere contains variable quantities of both natural and human-caused gases and chemicals that cause air pollution.

Detailed explanation-3: -Earth’s atmosphere has five major and several secondary layers. From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.