You are presented with the quiz "Harming an animal species has a negative impact on what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "harming an animal species has a negative impact on the population size of that species" and "population Population A population is comprised of the individuals of a species within an area". 

So, what's the best answer to the question?


 

     The number of individuals      