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Why forests are called lungs of the earth?

  1. Because they are very busy
  2. Because they balance the oxygen and carbon dioxide
  3. Because they have lungs
  4. None of the above

Answer: Because they balance the oxygen and carbon dioxide

Long Answer:

Forests are called the lungs of the earth because they helps in balancing the oxygen and carbon dioxide in nature. Deforestation has led to unbalancing of oxygen and carbon dioxide in nature.

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