Question

explain how atmospheric helps sustain life on earth?

Answer 1

The ozone layer, which lies in the upper stratosphere, is the planet's primary protector from electromagnetic radiation in the ultraviolet band of the spectrum. UV rays are invisible to the human eye and are harmful to life. By absorbing the UV radiation, the ozone layer keeps the bulk of rays from reaching Earth's surface. The ionosphere also helps to support life by absorbing energetic protons from the sun.

Weather and climate take place in the troposphere. The troposphere is also where the water cycle takes place. Water evaporates from the oceans and forms clouds. The clouds then release the water over land as rain, snow and other precipitation. Some of this precipitation is absorbed into the ground, where it provides water for all living things. The rest forms streams and rivers that flow into the ocean, and the cycle begins again.

Chemical reactions in the atmosphere yield the gases that make life possible. Oxygen in the troposphere allows human life, while carbon dioxide allows plant life to thrive.

Answer 2

Atmosphere 's second layer stratosphere contains a layer of Ozone. The ozone helps us from the harmful effects and scorching heat of the sun. If this ozone layer is not there the heat and uv rays will pass through and heat us all up.So atmosphere helps to sustain life on earth.