This document discusses several examples of exotic species that have been accidentally or intentionally introduced to new environments, some with negative impacts. It describes species like house sparrows and fire ants that were introduced from other regions and proliferated in North America, harming native species. It also discusses the Asian longhorned beetle and sea lamprey that were accidentally transported and caused damage by preying on other species and ecosystems. The key impacts of exotic species introductions mentioned are harm to native wildlife populations, agricultural damage, and high costs of control and eradication efforts.

2. In this world contain thousands of exotic species, some which may have been imported intentionally, some accidental. Species could possibly have a negative impact, while others may be positive.

4. Exotic species are known as species that are accidentally or deliberately forced to migrate to another area of which it does not belong. Example: African Killer bees were forced to move to Brazil due to high demands of honey production from humans.

5. Native Species: Species that originally live in the location are considered as this Ecosystem:

18. They destroy other birds and their habitat, smash their eggs and mainly kill adult blue birds. Since North America’s population is descended from birds, they decided to import them from Britain. Which they soon realized was a big mistake

19. As things kept progressing, the populations of these species in North America increased to about 150 billion in the 1940s. In agricultural areas, the house sparrow would quickly deplete the source of grains and seeds

20. The exotic fire ants have been damaging agriculture including: live stock and crops It cost a hefty 175 million to wipe out 99% of the RIFA of main infestation in Queensland The fire ant stings require medical attention

21. Fire ants were not a bother until they became an exotic species This species was accidentally shipped to USA from Alabama by cargo shipping Eventually, they started to infest the South/South-West USA, and areas in Taiwan and Australia

22. This beetle became a serious threat to species residing in the deciduous hardwood trees. When larval stages occur, the ALB bores deep into a tree’s heartwood, where the nutrients are consumed. Consistency in the process could severely damage the trees

23. If the ALB becomes established, it is estimated 1.2 billion trees will be killed They became exotic species by shipping. When cargos used to be supported by wood, the beetle would stick to it and finally be released in another area since they were poor fliers.

24. Sea lampreys created conflict with other species (lake trout, lake whitefish, chub, lake herring) After wiping out these predators they allowed other exotic species to also grow in population which would further harm native species in that area.

25. Sea lampreys became an exotic species due to the improvements of the Welland Canal in 1919 which allowed its spread from Lake Ontario to Lake Erie From there, it started gradually spreading further