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

The correct answer is c. a landslide caused by cattle overgrazing

Explanation:

The change in the ecosystem can be brought by both biotic as well as abiotic factors. Biotic factors involves the living organisms and the abiotic factor involves non-living things like lightning, flood, storm, volcanic eruption.

So cattle are living organisms so when any landslide is caused by overgrazing of cattle then it represents the change to an ecosystem brought by biotic factor.

Overgrazing destroys the grasses and small plants that helps in binding the soil together and prevent landslide. Therefore overgrazing results in landslide in hilly areas.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.