Assertion: protoplasm's part | /r/HasProperty | fulfilled by simple unicellular beings
Facets:
value: in the economy of nature
type: LOCATION
Source sentences:
text: The part fulfilled by these simple unicellular beings in the economy of nature has at all times been very great, and many geological formations, largely built up of their calcareous or silicious skeletons, bear testimony to the multitudes in which they must have swarmed in the waters of the ancient earth.