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asked Oct 20, 2021 143k views

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Petru · Answer 1 · 2021-10-20T19:58:10+0000

Answer: there were 500 billion zebra mussels

Step-by-step explanation:

Zebra mussels first appeared in the Hudson River in May 1991. Within a year, scientists estimated their numbers had reached 500 billion, an enormous amount!

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