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how can humans decrease the rate of endangered or extinct species?

introduce new predators to an environment.

minimize habitat destruction. this one?

pollute other environments.

create and populate more zoos.

using the scientific method.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.