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autochthonous

(adj): vs. allochthonous) -- (of rocks, deposits, etc.; found where they and their constituents were formed
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4 months ago Joannasephine said:

Pertaining to substances (organic matter from plankton), materials, or organisms originating within a particular waterway or lake and remaining in that waterway.

about 1 year ago stpeter said:

Contrast with allochthonous, naturally.

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kad (333 words)
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