Why Does the Zebra Mussel Cause More Trouble in North

question 77

Multiple Choice

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

• A) In North America, the zebra mussel has a more suitable climate.
• B) In North America, the zebra mussel has a better food supply.
• C) In its native Eurasia, the zebra mussel has many predators that keep its population in check.
• D) In North America, people cultivate zebra mussels and protect them from predators.

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