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UPPSC PCS 2017 · Question 4 of 149

Which one of the following atmospheric changes takes place due to green house effect?

Geography

  1. AIncrease in carbon dioxide concentration in atmosphere.Correct
  2. BIncrease in humidity in atmosphere.
  3. CIncrease in biological population.
  4. DIncrease in wind speed.

Answer: A. Increase in carbon dioxide concentration in atmosphere.

Explanation

The green house effect acts like a cover in the atmosphere, in which the short waves coming from the Sun enter but the long waves coming from the Earth cannot go back, hence the temperature of the atmosphere increases. Similarly, water vapor also acts as a green house effect, due to which the amount of moisture in the atmosphere also increases.

Source: edurev.in UPPSC Prelims 2017 GS Paper I with Answer Key and Solutions

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