Question

Which of the following scenarios represents change to an ecosystem brought about by biotic factors?

a. a wildfire caused by lightning striking a tree
b. a flood caused by a severe storm
c. a landslide caused by cattle overgrazing
d. a volcano

Answer 1

i mean it wouldnt be letter a. like you said.

it would actually be letter c. but i do agree landslide caused be overgrazing cattle

Answer 2

The answer is a. landslide caused by cattle grazing. Biotic factor means a change in the ecosystem which is caused by living things. Cattles in the situation are the biotic factors that caused the change. The other choices are situations caused by non-living things such as wildfire, severe storm, and volcano.