The zebra mussel is originally native to the Black and Caspian Seas of Asia. Zebra mussels were first detected in the Hudson River of New York in 1991. Before the arrival of zebra mussels, the Hudson River supported populations of native unionid mussels.
True
False

The correct answer is "True".

Explanation:

The zebra mussel is a small animal that lives near freshwater zones, just like the ones present at the Hudson River of New York. In this place is where zebra mussel was first detected in May 1991. However, it had been traced that zebra mussel is originally native to the Black and Caspian Seas of Asia. It is believed that zebra mussel arrived to New York in the mid-1980s in the ballast water of ocean-going ships that came from Europe.

True

Explanation:

The zebra mussel is native to the Caspian Sea, Black Sea, and Azov Sea in western Asia and eastern Europe. They are invasive species that displaced native mussels. From the nineteenth century it spread through central Europe with river navigation and in 1985 it reached North America, the Great Lakes, from where it has spread through the Mississippi basin to the Caribbean. It is currently in a process of expansion and is colonizing freshwater in Europe, Asia and North America.