The Atmosphere – Notes
The atmosphere is a layer of gases that envelopes the earth.
The atmosphere protects us from the harmful rays of the sun and provides us the air we breathe.
It regulates the earth’s temperature and makes life possible.
While nitrogen and oxygen make up the bulk of the atmosphere, it also has carbon dioxide, argon, helium, ozone, hydrogen, water vapour and other components.
Nitrogen is an essential constituent of all living organisms.
Plants get nitrogen through nitrogen – fixing bacteria that covert nitrogen from the air into water – soluble compounds.