Q2 of 16 Page 27

Tick the correct Answer.

Which of the following gases protects us from harmful sun rays?


(a) Carbon dioxide.


(b) Nitrogen.


(c) Ozone.

It is the layer that prevent harmful ultraviolet rays from reaching the surface of the earth.

More from this chapter

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1

Name three types of rainfall?

 1

What is air pressure?

 2

Tick the correct Answer.

The most important layer of the atmosphere is.


(a) Troposphere.


(b)Thermosphere.


(c) Mesosphere

 2

Tick the correct Answer.

Which of the following layers of atmosphere is free from clouds?


(a) Troposphere.


(b) Stratosphere.


(c) Mesosphere