Which of the following represents change to an ecosystem brought about by abiotic factors? a) the increase in plant populations due to human activities b) the increase in a predator population due to the increase in prey population c) the decrease in plant species due to herd grazing d) the extinction of a plant species due to disease e) the decrease in plant populations due to a decrease in the available water supply

The answer is E.

Abiotic factors are nonliving things in an environment. Water is an abiotic factor, and its decrease causes change in an ecosystem.

E) the decrease in plant populations due to a decrease in the available water supply

Explanation:

In the ecosystems, there are two types of factors interacting all of the time. Abioticand Biotic. "Bio" means life so "abiotic" is non-living, while "biotic" is living.

In the possible answers provided, all the alterations are provoque by biotic factors except one:

A) the increase in plant populations due to human activities (Biotic)

B) the increase in a predator population due to the increase in prey population (Biotic)

C) the decrease in plant species due to herd grazing (Biotic)

D) the extinction of a plant species due to disease (Biotic)

E) the decrease in plant populations due to a decrease in the available water supply (Abiotic)

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

the answer for this question would be d. glaciers