Which of the following is not true concerning the zebra mussel in the United States?

Zebra mussels were accidentally introduced to the Great Lakes, and they have continued to spread to other waterways in the United States. Once established, they reproduce quickly and are difficult to remove from rivers and other bodies of water. Therefore, the claim that they can be eliminated from a river with minimal effort is not true; the correct choice is “It can be eliminated from a river with minimal effort.”

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