Question

An ecosystem has experienced a recent decrease in its plant populations. Which of the following is a possible reason for the decline?

a. an increase in the number of predators
b. a decrease in the number of prey
c. a decrease in the available water
d. an increase in the available land space

Answer 1

The correct answer is option C

Answer 2

A possible reason for the decline could be a decrease in the available water. The basic nutrient of plants is water, as the substance that they use to live are made of substance in water plus solar energy. If one of these two factors experiments a decline, this could be a reason for the decline of plant as well. Obviously the decline of plants then will have a multitudine of other effects on the ecosystem.