Assertion: ediacara fauna | /r/Desires | atmospheric oxygen
Facets:
value: for their growth
type: PURPOSE
Source sentences:
text: Some scientists have suggested that the Ediacara fauna, named for the Ediacara Hills of South Australia , in which they were discovered in 1946, were the first metazoans (animals made up of more than one type of cell ) that required atmospheric oxygen for their growth.