Question

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D. Very short-answer questions
1. Where do dust particles enter the air from?
2. Which layer which protects the earth from the
ultraviolet rays of the sun?
3. Name the gases which trap ultraviolet radiations
in the atmosphere.
4. Name two sources of groundwater.
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Answer 1

Answer:

ozone protect the earth from uv .

industrial, garbage and household land fills (sources of ground water)

ozone absorb uv

Answer 2

Answer:

ans of 1, 2, 3 is ozone layer

ans 4 is tube well, well