Biology, 14.10.2020 23:01 babygreg2001p97abr

The nutrient content and oxygen levels in streams and rivers often change from one part to another. Drag and drop the tiles to match the relative oxygen levels and zones of the river to its corresponding nutrient levels. Also, place the picture of an organism that would most likely inhabit each zone.

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The nutrient content and oxygen levels in streams and rivers often change from one part to another....