Harming an animal species has a negative impact on the population size of that species, and species are the different kinds of organisms. Given these facts, what is impacted from harming a kind of animal among the following options:
- no impact
 - Pesticides
 - species in other environments
 - that animals' prey
 - an object
 - population size
 - Endocrine system
 - most organisms


 

      population size   