Question

Q-1 Give two examples of each:
(a) Gases present in air ___ ___
(b) layers of atmosphere ___ ___
(c) Applications of air pressure ___
___
(d) properties of air ___ ___
(e) methods of purification of water ____ ____
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Answer 1

Answer:

O2 and CO2

Exosphere and atmosphere

D) they can take any shape