How would a sudden decrease in the shrew population affect the barn owl population?

Owls eat shrews. If there are fewer shrews, then the owls have less to eat. With less to eat, they end up breeding less and/or starving more. So a crash in the shrew population will cause a reduction in the owl population.

Explanation:

it takes hundreds of years to become stable.

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human impact on the environment can be seen in the deterioration of the !

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