This process is known as thermohaline circulation. In the Earth's polar regions ocean water gets very cold, forming sea ice. As a consequence the surrounding seawater gets saltier, because when sea ice forms, the salt is left behind. As the seawater gets saltier, its density increases, and it starts to sink.
<span>The epipelagic ocean zone is most habitable. taken from another sorce than my brain doe fam...</span>
The correct answer is A) GPS.
When put with a GIS the item that can give both directions to location and travel time is a GPS.
GIS stands for Geographic Information System. This software can help us to store information about places, distances, and times. It is really helpful when we try to find a place on planet Earth. The Geographic Information System can give us information about maps, streets names, the type of environment, directions, and times. The best example is a GPS, that stands for Global Position System.