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Oceans and Seas
Oceans and Seas
A great expanse of continuous bodies of salt water which together cover more than 70 percent of the earth's surface. Seas may be partially or entirely enclosed by land, and ar...<br/>Year introduced: 1987
MeSH
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Lakes
Lakes
Inland bodies of still or slowly moving FRESH WATER or salt water, larger than a pond, and supplied by RIVERS and streams.<br/>Year introduced: 2012
MeSH
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