Oxygen levels will increase. Carbon dioxide levels will increase. The temperature of Earth will decrease. The air pollution in the atmosphere will decrease.
I gave my students this multiple choice question: When trees are removed from a tropical rain forest, other plants and animals are affected. Which statement identifies another change that will most likely occur when a rain forest habitat is destroyed?

Only one answer is correct among these 4 choices:
- Oxygen levels will increase.
- Carbon dioxide levels will increase.
- The temperature of Earth will decrease.
- The air pollution in the atmosphere will decrease.

Could you tell me which one is correct?

Carbon dioxide levels will increase.