Zebra & Quagga Mussels Effect On Water & Solution
FILE – In this July 6, 2009 file photo, invasive quagga mussels cover this formerly sunken boat at Lake Mead in Lake Mead National Recreation Area, Nev. Governors of 19 Western states are pressing the federal government to do more to prevent the spread of damage-causing invasive mussels from infected federally managed waterways. (AP Photo/Felicia…