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All of the following are examples of helping endangered species EXCEPT:

A. habitat restoration which may include removing invasive species

B. overfishing in only certain areas

C. reintroducing native species

D. habitat preservation

and

Why are invasive species often considered a disturbance in an ecosystem?

A. They compete for resources.

B. They have special growth needs.

C. They cause increased biodiversity.

D. They increase mutations.