Why are invasive species such a huge threat to ecosystems?

Question

A. Invasive species can do intense damage, so much so that ecosystems may not be able to recover.
B. Invasive species are impossible to control once they are introduced and spread rapidly.
C. Invasive species can replace native species, forcing their migration out of the area.
D.

Answer 1

All of the above.

Answer 2

choose one

Answer 3

A. Invasive species can do intense damage, so much so that ecosystems may not be able to recover.