Consider the following statements 1. Photosynthesis 2. Respiration 3. – McqOptions

MCQOPTIONS

1.	Consider the following statements 1. Photosynthesis 2. Respiration 3. Weathering of organic matter 4. Volcanic actions Which of the above activities add carbon dioxide to the Earth's carbon cycle?
A.	1 and 4
B.	2 and 3
C.	2.3 and 4
D.	all these
Answer» D. all these

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