Question

Which of the following is not true about nonnative species?
a.
They can have positive impacts on an ecosystem.
b.
They can have negative impacts on an ecosystem.
c.
They can be introduced within their natural range.
d.
A nonnative species can be an invasive species.

Answer 1

c.

By definition a nonnative (introduced) species occurs outside its natural geographic range. Being "introduced within their natural range" would mean they are native, so that statement is not true.