HydroElectricity

 Hydroelectricity is a renewable resource created by moving water. Hydroelectricity is a advantage to us because it creates a dam that creates power for us. It also helps in that we can use it over and over. Some Things that won't help is that it is very expensive. the point of Hydroelectricity is that it makes electricity and dams. It works where a turbine spins that hooked to a generator which creates power.
The dams also block the movement of fish between the sea and their spawning ground