... A number increasingly of lakes and rivers E. An increasing of lakes and rivers Item 2. A. in the northern United States invaded are being B. in the northern United States invaded have ... from the Caspian Sea in the mid-1980s into U.S. waterways aboard a transatlantic ship. E. The zebra mussel probably steamed from the Caspian Sea aboard a transatlantic ship sometime in the mid-1980s ... than a fingernail. B. by a species no larger than, a fingernail. C. by a species, no larger than a fingernail. D. by a species no larger, than a fingernail. E. by a species, no, larger than...