Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
Select the correct answer using the code given below.
Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
Select the correct answer using the code given below.
Answer:
(c)
Core Books/NCERT
Statement 1 is correct: Volcanic eruptions release large amounts of CO₂ into the atmosphere. Statement 2 is correct: Respiration by humans, animals, and plants releases CO₂ as a by -product. Statement 3 is incorrect: Photosynthesis consumes CO₂, it does not release it. Statement 4 is correct: Decomposition of organic matter by microbes releases CO₂ (and methane).