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Explain the causes of global warming. Why is it a warning to mankind?


Causes of global warming :

1. Deforestation

2. Increase in the level of green house gases (CO2, CH4, CFCs, N2O).

3. Burning of fossil fuels.

4. Rise in industrial wastes and pollutants.

Warning to mankind :

1. Rise in temperature is leading to increased melting of polar ice- caps as well as of other places like the Himalayan snow caps. This will result in the rise in sea level that can submerge many coastal areas.

2. Deleterious changes in the environment results in odd weather and climate changes, e.g. (EI Nino effect).