Question

What is one biotic factor that affects the size of a population in an ecosystem?

A) local geography

B) number of predators present

C) average yearly temperature

D) average yearly precipitation

Answer 1

B) number of predators present

biotic factors are living factors not the atmosphere , which is non-living i.e abiotic

hope it helped

Answer 2

Remember that a biotic factor is a living component in an ecosystem that affects the population of another organism. So that means that the answer is B.