they are alike
Exotic Species.
An alien species is a species that is not native to an area. An exotic species is native to an area but not common.
A native species originated from that area while an exotic species came from somewhere else.
An exotic species is a plant or animal species that is not native to a specific region but has been introduced there, often by human activity. These species can disrupt local ecosystems, outcompete native species, and cause harm to biodiversity.
a house sparrow is an exotic bird no a native bird!
Often the exotic species has fewer natural enemies in the new environment but competes for the same food supply and other necessities as the native species it displaces. Sometimes the exotic species is more adaptable or more aggressive and so pushes out a native species. Sometimes the exotic species reproduces at a higher rate or more successfully than does the native species.
When exotic species are introduced into an area these species can grow at exponential rate due to a lack of competitors and a lack of predators they may take over niches of native species and can eventually replace the native species completely
Exotic species are simply those that do not belong in your particular habitat. They are harmful because when they are introduced into your habitat they compete with some native species and threaten to make it extinct. Such is happening with the European starling and many native North America birds.
it has made natives more vulnerable to disease and predaors
Endemic species are organisms that are native to and restricted to a specific geographical area, evolving in isolation over time. In contrast, exotic species, also known as non-native species, are those that have been introduced to an area outside their natural habitat, often through human activity. While endemic species contribute to local biodiversity and ecosystems, exotic species can sometimes become invasive, disrupting local ecosystems and outcompeting native species. The key difference lies in their geographic distribution and the processes that have led to their presence in a given area.
a species that has been introduced from another geographic region to an area outside its natural range
The term 'exotic species' can apply to any species that is not native to a particular country. Imported 'exotics' can endanger local wildlife by preying on them for food !