Unionid mussels are native to the Hudson River in New York State. In the early 1990s, zebra mussels were introduced into the Hudson River. The table shows the number of unionid mussels and zebra mussels over the course of six years.
How did the population of unionid mussels change after zebra mussels were introduced? Why did this change occur?
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Unionid mussels are native to the Hudson River in New York State. In the early 1990s, zebra mussels...
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