Multiple choice

Which among these becomes harmful because of pollution?

  1. Global warming

  2. Ecological balance

  3. Greenhouse effect

  4. Desertification
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The greenhouse effect, is a process by which thermal radiation from a planetary surface, is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface, energy is transferred to the surface and the lower atmosphere. As a result, the temperature there is higher, than it would be, if direct heating by solar radiation. were the only warming mechanism.

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