Fact 1: Harming an animal species has a negative impact on the population size of that species.

Fact 2: Small animals are harmed by pesticides.

Given the two facts above, answer the question "What can have a negative impact on the population size of a species?" with the following options: 
- rainstorms
 - A virus
 - sexual reproduction
 - genetic diversity
 - deforestation
 - massive damage
 - Smoking
 - pesticides


 

        pesticides 