Assertion: plankton | /r/AtLocation | the water column
Facets:
Source sentences:
text: Plankton (singular plankter) are a diverse group of organisms that live in the water column and cannot swim against a current.
text: Plankton can move up and down in the water column.
text: Plankton (singular plankter) are a diverse group of organisms that live in the water column and cannot swim against a current.