Question

what are limitations of energy obtained from sea
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Answer 1

Answer:

due to attraction of the moon,there are low and high tides in the sea.tidal energy is harnessed by constructing a dam across a narrow opening to the sea. A turbine fixed at the opening of the dam converts tudal energy to electricity. the limitation to such dams is due to scarcity of locations where such dams can be constructed . ocean thermal energy of the sea is also ysed to produce electrivity but these plants operate if the temperature difference between water at the surface and water at the depth upto 2 km is 20 degree celsius or more...