Which of the following describes a relationship of predatory-prey

As prey increase predatory increase and as prey decrease due to the increase of predators. The number of predators will decrease due to the lack of foods.

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

it's not c. i took the quiz and got it wrong. so my best guess is b.

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