Question

Impala share the African plains with other grazing animals and predators. Which change would lead to a DECREASE in the population?
A. A reduction in the lion population.

B. An increase in the number of other grazing animals.

C. An increase in restrictions on the hunting of impala.

D. A reduction in the population of the other impala### predators.

Answer 1

B. An increase in the number of grazing animals.

Impala and other grazing animals use the same food sources of the African plains.

Answer 2

The correct answer is B. An increase in the number of other grazing animals.

Explanation:

In ecosystems, one of the factors that can lead to the decrease of the population of an organism is competition, this occurs as organisms struggle to get the same resource such as food, water or shelter. Additionally, competition increases as more organisms need the same resource. This implies in the case of the impala that feeds on grass and plants if there is an increase in the number of other grazing animals, competition would increase and this would lead to a decrease in the population as some Impalas might not get enough food to survive.