Why does a change in the food web affect the balance of an ecosystem? a.) in a food web, energy does not pass from one part to another. b.) there is more energy available at higher levels of a food web. c.) in an ecosystem, prey and predator populations affect each other. d.) in an ecosystem, a population will always return to its previous level in the ecosystem.

C) In an ecosystem, prey and predator populations affect each other.

Think of cause and effect: The wolves keep the deer population in check because they hunt them. If the wolf population increases, the deer population goes down. If you reduce the number of wolves than the deer population goes up.

Hope this helps :)

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the answer is 3.1 his answer is wrong mines is right