Answer: the writing is too small for me
Explanation:
The difference between the fertility rate and the death rate corresponds with the birth rate. When you take the number of children that have been born (alive) in a given year, and then minus the number of the people that have died in the same year, you get the birthrate. It can be positive, when there's more born children than people that died, or negative, when there's more people that died than born children.
B. Deforestation is a way to clear land and plant more by humans but the other answers are natural things that happen in the environment.