Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density - weight - of water change. That helps push water from one side of the world to the other. Without motion in the ocean - there would not be nearly as many different... Show More >>
Currents keep the ocean moving. They start with spin of the Earth and the heat of the Sun. The salt in seawater makes the density - weight - of water change. That helps push water from one side of the world to the other. Without motion in the ocean - there would not be nearly as many different things living in the sea. Currents out in the Ocean make our world the way it is. Show Less >>
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