Why does the zebra mussel cause more trouble in North America than in its original home?

Question

Quizplus · Accepted Answer

In its native Eurasia, the zebra mussel has many parasites and predators that keep its population in check. In North America, however, there are fewer natural predators and competitors, allowing the zebra mussel to thrive and cause more trouble. Factors such as climate and food supply may also play a role, but the lack of natural predators and competitors is probably the most significant difference between the two environments.

Why Does the Zebra Mussel Cause More Trouble in North