When prey is abundant, predator populations increase because more young are able to survive. More predators kill more prey, which, along with food scarcity, decreases the population. When prey becomes more scarce, the predator population declines until prey is again more abundant. Therefore, the two balance each other.
I disagree because although recycling is good, Earth firstly is not a closed system and new matter enters the environment all the time, such as comets.
Because then you get a infection
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<u><em>C.)</em></u> <em>Crest to trough</em>
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If a population starts to increase in size because of reproduction, it might reach its carrying capacity. This can affect the natural sources the population gets because the wouldn't be enough to support all the organisms in that population.
