questionnaire

1. What is atmosphere?

layer of sheets

layer of air

none

Clear selection

2. How many layers are there in atmosphere?

4

3

5

Clear selection

3. Ozone layer is present in which layer?

troposphere

exosphere

stratosphere

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4. The main cause of ozone layer depletion is.....

smoking

use of chlorofluorocarbon

deforestation

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5. which one of following is not the effect of greenhouse?

absorb the solar heat

reduce the temperature

global warming

Clear selection