Question

Match the stage of the oxygen cycle with the correct description.

Question 3 options:

All aerobic organisms use free oxygen for respiration


Animals exhale carbon dioxide back into the atmosphere which is again used by the plants during photosynthesis


All green plants during the process of photosynthesis, release oxygen back into the atmosphere as a by-product

1.
Stage 1

2.
Stage 2

3.
Stage 3

Answer 1

1. Stage 2
2. Stage 3
3. Stage 1