introducing alien species Flashcards

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1
Q

what is an alien species?

A

an animal or plant that has been introduced into a country it does not originate from

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2
Q

what are the disadvantage of an invasive alien species?

A

. may grow faster than native species and upset the natural ecosystem
. native species may not be able to compete

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3
Q

what are some problems that alien species could cause ?

A

. if no predators for the alien species it could grow out of control
. alien species could compete with native species causing the native species to die out
. alien species could pray on native species reducing their number
. alien species could carry a disease that could affect the native species

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4
Q

whats an example of an alien species in britain?

A

japanese knotweed- introduced into britain as an ornamental plant but is now a pest species as it has no natural enemies

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