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

Answer

  1. Emission of greenhouse gases, absorb IR radiation from earth’s surface/emit it again to earth, the cycle continues, till the earth’s surface has no long wave radiations to emit.
  2. Deleterious changes in the environment, odd climatic changes, melting of polar/Himalayan ice caps, rise in sea level, flooding/submerging of coastal areas.

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