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Hydroelectric Power Hydroelectric power is one of the oldest methods of producing power. This works and is related to water energy. Huge water generators are placed inside dams. Dams are huge walls to stop water from flowing. Water flowing through the holes of the dams spin turbine blades and these turbine blades are connected to generators to generate electricity. Producing electricity by hydroelectric power, has advantages and disadvantages Advantages: * No fuel, coal or oil is burned so there is less pollution * There is no cost to water since it is natural * It's renewable. Rainfall disperses water into reservoirs so there is a continuous flow of water. So the water doesn't run out. Disadvantages: Hydroelectric power is great but not mainly used to produce all of our electricity. This is because you need the space to build a dam and you also need a continuous flow of water in a reservoir. This takes a lot...

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