state gov OPSC ASO Mock Test Series 2025 General Knowledge Ecology and Environment Environment Problems
Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above adds carbon dioxide to the carbon cycle on Earth?
1
1 and 4 only
2
2 and 3 only
3
2, 3 and 4 only
4
1, 2, 3 and 4