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SlideshowReport

Impact of zebra mussels on members of a Great Lake nearshore

Description
Invasive species = non-native (exotic) organisms that spread widely and become dominant in a community
Growth-limiting factors (predators, disease, etc.) are removed or absent

They have major ecological effects
Chestnut blight, from Asia, wiped out American chestnut trees
Some species help people (i.e., European honeybee)
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