Publisher's Synopsis
The environmental surroundings are everything around you - the air, the land, and the
rivers and oceans. The atmosphere is composed of several gases, water vapor, and dust
particles. The important gases are nitrogen, oxygen-argon, carbon dioxide, neon,
helium, hydrogen, ozone, etc. By volume, nitrogen is 78% and oxygen by about 21%.
Together, these two gases make 99 % volume of the atmosphere, the rest 1% also
important for us. Nitrogen is used by the plants for their survival. But plants cannot take
nitrogen directly from the air. Bacteria that live in the soil take nitrogen from the air
and change its form so that plants can use it. Air is extremely important for several
cycles and makes life possible on earth (https: //sciencing.com/importance-air-
6330367.
