Question

E. Match the columns:
1. Oxygen gas
2. Nitrogen gas
3. Carbon dioxide gas
4. Water vapour
5. Dust particles
a. 4/5th part of air
b. helps to extinguish fire
c. water cycle
d. 1/5th part of air
e. vary from place t
o place​

Answer 1

Answer:

Nitrogen-⅘th part of air

Oxygen- ⅕th of air,

Carbon dioxide gas - helps to extinguish fire

Water vapour- water cycle

Dust particles- vary from place to place

Answer 2

Answer:

oxygen 21% nitrogen 78% carbon dioxide 0.9%