Assertion: plankton | /r/HasProperty | critical
Facets:
Source sentences:
text: Plankton are at the base of the food chain, meaning they are critical in supporting marine and freshwater food webs.
text: That is, plankton are a critical food resource for other aquatic organisms (such as fish) that live in freshwater and marine environments.
text: Plankton is not only critical for the growth of fish and other marine critters, it also sustains some much larger animals, like basking sharks, manta rays and blue whales who feed directly off plankton –