In spite of being cheaper, pollution free and renewable sources of power, significance of hydroelectricity has declined. Justify the statement by giving any for arguments.
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This has done because of hydroelectricity are made from water energy which much cheaper selling. So, the dam dealers get much small amount of price. So, they used a other electricity providing resource called coal. This can give higher profit. The people only used the electricity but doesn't give interest to which substance from which electricity being made. So, being hydroelectricity cheaper the significance get declined.
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