Because the ecosystem they come from has evolved with and adapted to them. It means that they have predators or other systems to keep their population in check, and likewise what they prey on has evolved to sustain itself despite their prey.
When they enter a new environment they do not face the dame resistance and so proliferate enormously and can wipe out unprepared fauna.
Because the ecosystem they come from has evolved with and adapted to them. It means that they have predators or other systems to keep their population in check, and likewise what they prey on has evolved to sustain itself despite their prey.
When they enter a new environment they do not face the dame resistance and so proliferate enormously and can wipe out unprepared fauna.
Latest Answers