Question

IV. Fill in the blanks:
1.
The thick layer of air that surrounds the earth in called ---------
2. ----------helps in dispersal of seeds.
3.-------------gas in air is used by plants to make food for the entire world.
4.----------particles can be seen floating in a beam of light in a dark room.​

Answer 1

Explanation:

1. atmosphere

3 oxygen

4. dust

Answer 2

Answer:

1) Atmosphere

2) Oxygen

3)dust

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