Question

Read the following statements about carbon cycle.
I. About $4 \times 10^{13} kg$ of carbon is fixed annually in the biosphere through photosynthesis.
II. Carbon return to the atmosphere as $CO _{2}$ through respiration by producers and consumers.
III. Decomposers return $CO _{2}$ to the atmosphere by processing of waste materials and dead organic matter of land or oceans.
V. Burning of wood, combustion of organic matter, volcanic activities, etc., release $CO _{2}$ into the atmosphere.
Choose the correct option.

• A. Both statements I and II are true, but III and IV are false
• B. Both statements I and II are false, but III and IV are true
• C. All statements are true
• D. All statements are false

Answer 1

Answer: (C)

Correct answer is (c) All statements are true