Multiple choice

The use of wood, charcoal, and dung as major sources of energy in developing countries has led to increase in

  1. terrestrial and sub-terrestrial pollution

  2. dependence on fossil fuels

  3. deforestation

  4. ozone depletion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 The use of wood, charcoal, and dung as major sources of energy in developing countries has led to increase in ozone depletion.  Deforestation and the use of fossil fuels are both suspected of increasing the amount of carbon dioxide in the atmosphere. This is of worldwide concern because of its potential effects on the environment, such as global warming due to weakening of the ozone layer which protects the earth from harmful solar radiation.

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