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Zooplankton populations in Lake Erie and the Hudson River have declined by up to 70% since the arrival of zebra mussels because ________.

User Arby
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Answer: Zebra mussels are invasive species and eat plankton.

Explanation: Zebra Mussels are bivalve mollusks that filter feed plankton out of the water. They have taken over parts of the Great Lakes as they have no natural predators in the region. They have consumed so many phytoplankton out of the waters of the Great Lakes because of this.

User Kristoffer
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