1. Invasion of the Zebra Mussels
One of the worst invasive species in Canada is the zebra mussel. ... When the ship stopped it dumped ballast water and the zebra mussels, since zebra mussels were away from most of their predators, they had lots of space and food to grow( Gray, Zebra Mussel 14-16). Zebra mussels have spread so fast that by 1989, they were all around Lake Erie with colonies up to 40 000 zebra mussels per square meter. ... People helped zebra mussels spread, by putting lake water and zebra mussels into their bait buckets, then they would dump their bait buckets through out the river, causing the zebra mussels t...
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