Question

Consider the following:1. Photosynthesis2. Respiration3. Decay of organic matter4. Volcanic actionWhich of the above add carbon dioxide to the carbon cycle on Earth ?(a) 1 and 4 only(b) 2 and 3 only(c) 2, 3 and 4 only(d) 1, 2,3 and 4

Answer 1

Option no. C is right answer

Answer 2

C option is correct.