Ever since nonnative zebra mussels were introduced into the Great Lakes, they have caused ecological problems. Zebra mussels are very efficient filter feeders. They are better at filtering algae from the water than native species are. Which situation would not result from zebra mussel introduction? 1- water becoming clearer because zebra mussels eat more algae 2- excessive growth of zebra mussel populations 3- excessive growth of algae that kills other organisms 4-cdecline in populations of native mussel species