Match the vestigal organs to their probable use in other organs

I believe it should match as the following...

sight in whales > eyeballs in cavefish

balance in monkeys > tailbone in humans

attachment point for limbs in frogs > pelvis bone in whales

One positive impact of this type of power plant on the environment is that I creates no pollution, unlike other types of power plants like nuclear and fossil fuel.

One negative impact of this type of power plant on the environment is that it could harm fish. As the water hits the turbine, fish that it pulls along also hut the turbine, potentially killing them.

hope this helps !