Invasive species, a lot of times invasive species exotic animals whose owners released them after growing bored of them or not being able to care for them any more, but did you know just by enjoying everyday activities like boating and fishing can introduced invasive species like zebra mussels, rock snot(didymo geminata) and Asian carp to name a few.
A key factor that makes many species invasive is a lack of predators in the new environment. This is complex and results from evolution over a long time in a different place. Predators and prey often developed their abilities together. What this means is that as prey develops better defenses, predators, in turn, develop better ways of exposing their preys flaws . The classic example of this comes
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The fastest cheetahs then survive better because they can better catch the faster antelope. Neither species ultimately gains an advantage because they continually evolve in response to one another.
However, when a plant or animal enters a new environment, they will likely encounter predators who have not been evolving with them, which makes these predators unable to successfully exploit the prey. Defense mechanisms like toxin, size or speed that have been matched by adaptation in predators are suddenly without match in the new environment. This can allow the species to proliferate rapidly as it no longer faces any predators. Many insect or fungi that are invasive in the United States come from regions where native trees have evolved resistance to their effects. When these species enter the US, they find trees that have no resistance and they can decimate forests quickly. Invasive species may also be able to exploit a resource that native species cannot use, which allows them to take hold in the new environment. Introduced into the Western United States, barbed goatgrass thrives in serpentine soils, whereas native plants do not normally grow in them. This has given them a solid stronghold in the area. Combined with the