Why are nonnative species often considered a disturbance in an ecosystem? A. They increase mutations.

B. They compete for resources.

C. They have special growth needs.

D. They cause increased biodiversity.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

A

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