Assertion: female fur seal | /r/HasProperty | born with lower weight
Facets:
Source sentences:
text: Lead author, Dr Jaume Forcada from the British Antarctic Survey explains: "Compared with 20 years ago, we can see that female fur seals are now born with a lower weight, those that survive and return to breed tend to be the bigger ones and they have their first pup later in life than they used to.