1.

Explain the relationship between greenhouse gases and global warming.

Answer»

Greenhouse gases (CO2, CH4, N2O, CFCs) allow the solar radiations to enter but prevent the escape of heat radiations of longer wavelength. The absorbed radiations again come to earth’s surface and heat it up. Increase in the level of these greenhouse gases allow the heat waves to reach earth but prevent their escape and thus the earth becomes warm. There is gradual continuous increase in average temperature of earth surface leading to global warming.



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