Question

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

Question 7 options:

All aerobic organisms use free oxygen for respiration


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


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

1.
Stage 1

2.
Stage 2

3.
Stage 3

Answer 1

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