Question

What is meant by alien species invasion?

Answer 1

Alien species invasion:

1. New species getting into a geographic region are called alien species.
2. The introduction of alien species causes a major loss to the biological community.
3. The successful exotic species eliminate the native species to the point of extinction.
4. Then alter the several habitat that are not any longer able to persist.
5. Example : Introduction of Nile perch into Lake Victoria disturbed the ecosystem of the lake by eliminating several native species of small cichlid fishes.