Fill in the blanks:
1. Atmosphere is held in place by the earth’s _______
2. The atmosphere is made of _______ different layers.
3. A _______ shows the direction in which the air is moving at a particular place.
4. The ozone layer protects all life on earth from the harmful _______ rays of the sun.
5. Highly reactive gas was later names ‘oxygen’ by _______
6. _______ discovered nitrogen.
7. Air contains small amount of CO , Water vapour and some other gases like _______ etc.
8. Air contains more _______ in rainy season