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Question

Process of re-radiating heat by atmospheric dust water vapour, ozone, CO2, etc. is known as:

A
Greenhouse effect
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B
CO2 fertilization effect
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C
Radioactive effect
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D
Ozone depletion effect
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Solution

The correct option is A Greenhouse effect
The greenhouse effect is a natural process that warms the earth's surface. When the sun's energy reaches the earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.

The increased photosynthesis rate in plants that results from increased levels of carbon dioxide is termed as CO2 fertilization effect.

The harmful effects such as mutation, cell death etc caused by the energy released into the environment from radioactive material decay, or break down is termed radioactive effect.

The thinning of the ozone layer present in the upper atmosphere due to harmful chemicals such CFCs is termed as ozone depletion effect.

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