Assertion: seal's number | /r/HasProperty | sensitive
Facets:
value: to low light levels
type: CAUSE
value: very
type: DEGREE
value: to el niño weather events
type: CAUSE
Source sentences:
text: The number of Galapagos Fur Seals successfully bred in a year is very sensitive to El Niño weather events.
text: Seals eyes contain high numbers of rod cells called photoreceptor cells that are sensitive to low light levels.