Assertion: mastodon's population | /r/CapableOf | die out before human arrival
Facets:
value: in large measure
type: OTHER
value: because of habitat shrinkage
type: CAUSE
Source sentences:
text: In contrast, the St. Paul Island mammoth population apparently died out before human arrival because of habitat shrinkage resulting from the post-ice age sea-level rise, perhaps in large measure as a result of a consequent reduction in the freshwater supply.