Answer: Deep ocean currents are density-driven and differ from surface currents in scale, speed, and energy. Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is.
Explanation:
There are several reasons why the use of alternative sources of energy would be beneficial to the Earth and its people, but the main reason is that fossil fuels will run out soon.
The color may help it to blend in and avoid being eaten by predators and survive long enough to reproduce.