Question

Fill in the blanks.

1. _____ per cent of the atmosphere is made of nitrogen.

2. Along with carbon dioxide and methane,_____ _____ is a potent greenhouse gas.

3. The rate at which the temperature drops in the _____ is 1°C per 165 metres.

4. The _____is the layer of the atmosphere that helps in radio transmission.

5. The upper part of the thermosphere is called the _____.
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Answer 1

Answer:

21 %

cfc

6%

Ir

porosphere

Answer 2

Explanation:

21 per

cfc

6per

ir

porosphere