Sometimes people too can become exotic species. In this paper I will write about the Atlantic sea lamprey and its effects on the Great Lakes environment. Exotic, intrusive and nonindigenous species are all basically the same thing. The term exotic means that a species is not native and has been introduced from abroad and is foreign. In other words exotic species are foreign species that have been accidentally or purposely introduced into a new environment.
Exotic species can be harmful or helpful to the environment they are introduced to.
In most cases the exotic species is harmful to its new environment. This is because the introduced species has no natural predators in its new home. It takes generations for certain animals to become totally adapted to preying on other animals. When a new species is introduced, none of the animals or plants in its environment have ever had to deal with it before, and therefore have no protection from it , or no specialized tools to aid in killing it. This leaves an enormous amount of room for the introduced species to take control over the environment.