INVASIVE SPECIES ZEBRA MUSSELS by Martha London FOCUS READERS navigator
FRESHWATER PROBLEM The water shimmered in the afternoon sun The lake appeared cool and refreshing But a tiny creature was causing massive problems under the surface Zebra mussels covered rocks and plants Some zebra mussels even attached themselves to other mussels and crayfish Large numbers of zebra mussels often gather together in one area These groups are known as colonies 5 CHAPTER 1
