Multiple choice

Q.7. Forests are called green lungs because

  1. They release CO2 during photosynthesis

  2. They give out o2 during photosynthesis

  3. They undergo transpiration
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Forests are called green lungs because they absorb carbon dioxide and release oxygen during the process of photosynthesis, which is vital for life.

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