How does competition in an ecosystem primarily affect population size?(1 point)

Responses

It leads to an increase in population size.
It leads to an increase in population size.

It causes a decrease in population size.
It causes a decrease in population size.

It has no effect on population size.
It has no effect on population size.

It results in random fluctuations in population size.
It results in random fluctuations in population size.

1 answer

Competition in an ecosystem primarily affects population size by causing a decrease in population size. When individuals compete for limited resources such as food, water, and shelter, it can lead to increased mortality rates and reduced reproduction, ultimately resulting in decreased population sizes. Therefore, the correct response is:

It causes a decrease in population size.