Question

Make proper pairs :
A
1) Absorption of the ultraviolet sunrays
2) Essential for human life
3) Spread of sunlight on the earth
4) Reduction in the intensity of oxygen
B
a) Dust particles
b) Ozone
c) Hydrogen
d) Oxygen
f) Nitrogen​

Answer 1

Absorption of the ultraviolet sunrays -Ozone

Essential for human life - Oxygen

Spread of sunlight on the earth  -  Nitrogen​

Reduction in the intensity of oxygen - Hydrogen