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Science Vocabulary terms and definitions

Trevor Fu

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Across
3.A widely spread source of pollution that is difficult to link to a specific point of origin.
5.The process of passing water through a series of screens that allow the water through,but not larger solid particles.
6.A substance that causes pollution.
7.A land area that is covered with a shallow layer of water during some or all of the year.
8.The degree of purity of water, determined by measuring the substances in water besides water molecules.
Down
1.A specific source of pollution that can be identified.
2.The process of obtaining fresh water from salt water by removing the salt.
4.The process of supplying water to areas of land to make them suitable for growing crops.

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