Question

what is atmosphere? Describe its composition and function​

Answer 1

HI

HERE IS YOUR ANSWER

The atmosphere is a mixture of many gases and tiny solid particles. A clean city sample of air is made up of 78% of nitrogen and 21% of oxygen. Oxygen gas helps in burning and breathing. Without breathing oxygen, most living things cannot survive

HOPE,IT WILL HELP YOU

Answer 2

Answer:

Earth's atmosphereis composed of about 78% nitrogen, 21% oxygen, and 0.93% argon. The remainder, less than 0.1%, contains such trace gases as water vapor, carbon dioxide, and ozone. ... It is thought that the present atmosphere developed from gases ejected by volcanoes.