hydroelectric - causes a big impat on th environment, wave power - most useful on small islands and is unreliable, tidal barrages - can only be used in big estuaries but is reliable, wind power - no pollution although still raises objection from locals, solar cells - very reliable source of energy in the day time, geothermal energy - very few places where this is viable, biomass - still causes pollution although is renewable,

Match-Up renewable resources

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