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Green house effect is warming due to

1. Infra-red rays reaching earth
2. Moisture layer in atmosphere
3. Increase in temperature due to increase in carbon dioxide concentration of atmosphere
4. Ozone layer of atmosphere

Correct answer: Increase in temperature due to increase in carbon dioxide concentration of atmosphere

Solution

The greenhouse effect is caused by the trapping of heat in the Earth's atmosphere due to increased levels of greenhouse gases like carbon dioxide, which absorb and re-radiate infrared radiation.

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