5 Questions
What is the legal definition of an invasive species?
An alien species whose introduction does or is likely to cause economic or environmental harm or harm to human health.
What are some alternative terms used to describe alien species?
Exotic, non-native, introduced, or non-indigenous species.
What term is sometimes used instead of 'invasive' when these organisms cause harm?
Noxious or nuisance.
What are some problems caused by invasive species?
Threatening the survival of native plants and animals, interfering with ecosystem functions, hybridizing with native species, spreading easily in today's era of global commerce, and being difficult and costly to control.
How do invasive species spread?
They can spread very slowly over years or even decades.
Test your knowledge on the severity of invasive species in the United States with this quiz. Learn what exactly qualifies as an invasive species and how they can cause harm to the environment, economy, and human health.
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