Forests help maintain the balance of oxygen and which gas in the atmosphere?
ANitrogen gas
BHydrogen gas
CMethane gas
DCarbon dioxide
Answer & Solution
Correct answer: D. Carbon dioxide
1. Plants take in carbon dioxide.
2. They release oxygen.
3. This is why forests are lungs.
_Source: syllabus Science, Chapter 17, Forests: Our Lifeline._
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