Supporting Detail
"It was the first time electricity had been
sent a long distance."
...no one today sees Niagara Falls the
way it used to look....
"Then he ran several waterwheels at one,
using the power of the falls."
"It's only half as amazing as it used to
be."
Main Ideal
There are benefits to using
the falls for energy.
Main Idea 2
There are consequences for using
the falls for energy.