Environmental Studies Short Question | Gkseries

Which of the following adds to the carbon dioxide concentration in atmosphere ?

(I) Volcanic action

(II) Respiration

(III) Photosynthesis

(IV) Decay of organic matter

A (I) and (III) only

B (II) only

C (I), (II) and (IV) only

D (I), (II), (III) and (IV)

Answer & Explanation
Answer:(I), (II) and (IV) only