Question

To maintain a healthy balance between oxygen and carbon dioxide

• A. use more fossil fuels
• B. plant more trees
• C. use fire wood as fuel
• D. use clean fuels like CNG

Answer 1

The correct option is B

plant more trees

Correct option answer

Plants use up carbon dioxide during photosynthesis and release oxygen into the atmosphere and maintain the balance between oxygen and carbon dioxide in the atmosphere, so planting more trees will help to maintain the balance.

Incorrect option explanation

(a) Use or burning of fuels will lead to more evaluation of gases.

(c) Use of wood as fuel will lead to the evaluation of carbon dioxide.

(d) Use of CNG will lead to maintaining the balance but planting more trees is much more helpful.

Concluding statement

Plants use up carbon dioxide during photosynthesis and release oxygen into the atmosphere, therefore, option (b) plants more trees is the correct option.