how much water is in the ocean, 99.7, 66.6, how did the alt get in the ocean, rain what washed a mineral called chloride, the first president put the salt in the ocean, what is the first part of the bottom of the ocean, continetal shelf, the trench, what is caused by the gravitational pull of the moon, waves, tides, how is water vapor made, with heat from the sun hitting the water and evaporated it, with magic

unit 4

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