Which of the following adds/add carbon dioxide to the carbon cycle on – McqOptions

MCQOPTIONS

1.	Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth?1. Volcanic action2. Respiration3. Photosynthesis4. The decay of organic matterSelect the correct answer using the code given below
A.	1 and 3 only
B.	2 only
C.	1, 2 and 4 only
D.	1, 2, 3 and 4
Answer» D. 1, 2, 3 and 4

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