Home Biology Ecosystem All Topic Question For Revision Test Which of the following contribute to the car…
Biology Ecosystem All Topic Question For Revision Test Single Correct MCQ
Published on: August 13, 2026

Which of the following contribute to the carbon cycle?

A
Photosynthesis
B
Respiration
C
Fossil fuel combustion
D
All of the above

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Verified by Experts
The correct answer is:
D

Photosynthesis removes CO 2 from the atmosphere.

Respiration and fossil fuel combustion release CO 2 back into the atmosphere.

All these processes are part of the carbon cycle.

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