Why are alternative wave energy sources needed?
Because they are cheaper than other wind and solar plants and produce just the same amount of energy. Nowadays energy is used in terawatts which is 85 percent fossil fuels and these fuels increase the size of the layer around the earth which protects it from harmful rays from the sun. Unfortunately the higher the temperature, the thicker these layers are and sooner or later they trap the heat inside the earth and could eventually destroy life on earth. now it just causes higher sea levels and things of that nature.
