Describe how the metal probably
increases the reaction rate, identify
whether this is an example of
homogeneous or heterogeneous
catalysis, and explain how you know.

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.

D=m/v =57.9/3 = 19.3 g/cm^3

Ineed a picture or something