What are the worst animal invaders

There are many invasive species.  The one I listed below are some of the worst.

Explanation:

1. The Black Rat

2. The Asian Tiger Mosquito

3. The Cotton Whitefly

4. The Snakehead Fish

5. The Burmese Python

I hope this helped you a bit :)

what are the issues?

1.the population change is near or at replacement level.

4. the birth and death rates are balanced.

6. sweden is most likely a developed country.