Which examples represent abiotic factors affecting biotic factors? Check all that apply.

In general, biotic factors are the living components of an ecosystem and are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.

According to E2020 the following are all the correct answers.

Ash from a volcanic eruption kills new plant growth.

Warm water from a nuclear power plant causes overgrowth of algae.

A river floods and deposits tree pollen along its banks.