Question

How does deforestation affect the environment?

A. It decreases soil erosion.
B. It increases many types of habitats.
C. It results in more carbon dioxide in the air.

Answer 1

The answer is C, it results in more carbon dioxide in the air.

Trees use carbon dioxide in photosynthesis, and produce oxygen.

It can't be either A or B, as it increases soil erosion (less roots), and decreases habitats.