Introducing alien species and their effect on native wildlife

Question 1

What is an alien species?

Answer 1

An animal or a plant that has been introduced into a country that is does not originate from

Question 2

What are 4 problems that alien species can cause?

Answer 2

~The alien species may have no predators in the area, and its population
may grow out of control.
~The alien species may compete with an existing species, causing it to die
out in the area. (E.g. animals compete for food; plants compete for light).
~The alien species may prey on existing species, reducing their number.
~The alien species may carry a disease that could affect the native
species.