Assertion: cetacean's layer | /r/ObjectUse | used for thermal insulation
Facets:
Source sentences:
text: The body is wrapped in a thick layer of fat, known as blubber, used for thermal insulation and gives cetaceans their smooth, streamlined body shape.
text: The body is wrapped in a thick layer of fat, known as blubber, used for thermal insulation and gives cetaceans their smooth, streamlined body shape.