Dangers of Invasive Species

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There are many different animal species in the United States, but how many species are actually native to this country? This study is to identify the various types of invasive species in the United States and the many different countries from which they come. Not only have animal species come from different countries, but plants as well. This study concentrates on the damages said to have been caused by invasive species and the measures that the national and international governments are taking to solve this problem.
Animals that have been moved from one area to another area that they are not indigenous to are considered invasive or non-indigenous species. These species usually do damage to the environment by attacking crops, animals, and even humans. Some species are bio hazardous and impact the environment by spreading bacteria, viruses, and diseases.
The Environmental Protection Agency, or EPA, has taken extreme measures to make sure that whenever ships come in for trade, that extra luggage, being the organism, does not tag along. The EPA takes such measures because once an invasive species population gets started, it is almost impossible to control it; however, the start of a population takes time.
“An introduced species typically must survive at low population densities before it becomes invasive in a new location. At low population densities, reproduction and maintenance in a new location can be difficult: a species might go somewhere multiple times before establishing. Such repeated patterns of human movement as ships sailing to and from ports or cars driving up and down highways offer repeated opportunities for establishment (Wiki).”
Studies show that if an invasive species can out-compete a native species in its own ...

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