WBCS.LIVE practice question

Consider the following: 1. Photosynthesis 2. Respiration 3. Decay of organic matter 4. Volcanic action Which of the above add carbon dioxide to the carbon cycle on Earth?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 1 and 4 only
  2. 2 and 3 only
  3. 2,3 and 4 only
  4. 1,2,3 and 4

Correct answer and explanation

Correct answer: 2,3 and 4 only