Question

Which of the following refers to a species that does NOT occur naturally in a region or ecosystem?
A.

native
B.

primary
C.

nonnative
D.

secondary

Answer 1

C. nonnative

Answer 2

What is the greatest threat humans pose to biodiversity?
A.

habitat loss
B.

interspeciation
C.

genetic mutations
D.

invasive species

Answer 3

A. habitat loss