Normally, the temperature decreases with the increase in height from the Earth’s surface because
1. The atmosphere can be heated upwards only from the Earth’s surface.
2. There is more moisture in the upper atmosphere.
3. The air is less dense in the upper atmosphere.
Select the correct answer using the codes given below:

Options

A. 1 only
B. 2 and 3 only
C. 1 and 3 only
D. 1, 2 and 3

Answer

C

Explanation

The atmosphere can be heated upwards only from the earth’s surface. The air is less dense in the upper atmosphere.