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| the total amount of dissolved salts in ocean water |
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| organisms, generally microscopic in size, that float or drift in the ocean |
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| any of the tiny animal like organisms that live near the surface of the ocean |
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| the process by which green plants and other producers use light energy to make food |
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| all the free-swimming animals that live in the ocean including such animals as fish, octopus, and whales |
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| all the plants and animals that live on the ocean bottom, including oysters, crabs, and coral |
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| Water covers _________ of Earth's surface. |
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| ________ is a mixture of the compound water (H2O) and several salts. |
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| The most common salt in ocean water consists of two elements, _______ and _________. |
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| Sodium and Chlorine are combined as ___________, which is used as table salt. |
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| Because the ocean is so huge, its overall _______ changes very slowly. |
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| Ocean water is a "soup" of living organisms, such as ______, ________, and _________. |
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| ________ freezes at a lower temperature the fresh water. |
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| Ocean water also includes some harmful substances put there by __________. |
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