Zooplankton Populations in Lake Erie and the Hudson River Have

Multiple Choice

Zooplankton populations in Lake Erie and the Hudson River have declined by up to 70% or more since the arrival of zebra mussels because _______________

A) zebra mussels block sunlight penetration into lakes and thus prevent zooplankton from photosynthesizing
B) waste from zebra mussels promotes bacterial growth that kills zooplankton
C) zebra mussels prey on zooplankton
D) zebra mussels carry a parasite that kills zooplankton
E) zebra mussels feed on cyanobacteria, which zooplankton need as a food source