The earth only has a limited supply of fresh water; eventually, we will have to use ocean water. we will purify ocean water through a process called desalinization. currently, it is not profitable to purify ocean water. how would this change in the future?

the risk of running out of water could mean that it becomes more profitable to purify ocean water.

water could become expensive, and then it would become profitable to purify ocean water.

it takes a lot of energy to purify ocean water, but if people are willing to pay a lot, then it will become profitable.

all of the above.

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.