Question

Energy can be extracted from water by:___________

1. Exploiting its potential energy, as is done in hydroelectric and tidal plants.
2. Exploiting the temperature gradients in oceans, as is done in OTEC plants.
3. Exploiting its mechanical energy, as is done in ocean currents and surface waves.
4. Exploiting the energy in its nuclei, as is done in fusion power plants.
5. All of the above.

Answer 1

5. All of the above.

Step-by-step explanation:

Energy can be extracted from water by gravitational force as done in hydroelectric plants, temperature gradients that creates natural convection processes, the mechanical variations of ocean currents and surface waves, and by nuclear fussion.