Question

Which of the following serves as "green lungs"?

• A. Green house gases
• B. Kitchen gardens
• C. Forests
• D. Human lungs

Answer 1

The correct option is C

Forests

Forests are known as green lungs because the plants produce oxygen and absorb carbon-dioxide. Thus it maintains the balance of oxygen and carbon dioxide in the atmosphere. Just as our lungs absorb carbon dioxide from the blood and infuse it with oxygen, green plants absorb carbon dioxide during photosynthesis and release oxygen into the atmosphere. The earth's forests act as its air purifiers, soaking up the large amounts of carbon dioxide absorbed from the atmosphere.