PUMPA - SMART LEARNING

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Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
 
The Following are the primary reasons for the need to harness non-conventional sources of energy,
  • Conventional sources will 
    in the near future.
  • Non-conventional source of energy 
    to environmental pollution.
Energy can be harnessed from the sea in the following ways,
Answer variants:
will get exhausted
Nuclear energy
Tidal energy
leads
Ocean Thermal Energy
Wave energy
will not get exhausted
Bio mass
did not lead
Solar energy