What Is an Ecosystem?: Mastery Test

A population of mammals leaves an ecosystem because of increased temperatures and decreased rainfall. What's the reason for this shift?

A:change in abiotic factors

An ecosystem now receives far less rain than it used to. The weather also became drier and hotter. Over time, plants with structures that helped them to conserve water became more prevalent than plants that didn't have those structures.

Adaptations, natural selection.

If the population of rabbits in this ecosystem decreased dramatically because of certain environmental changes, which organisms' food supply would decrease?

B: jackal and wildcat

As a result of recent weather activity, there's less water available for human consumption. Which biome is affected the most by this change?

D:freshwater

Sort the sentences based on whether the adaptations are characteristics of organisms in the desert or the taiga.

Desert:Animals have the ability to burrow to escape the heat. Plants have structures that conserve water. taiga:Trees have dark-colored leaves to maximize absorption of sunlight. Trees have soft, green needles. Animals have thick fur.