Worldwide, their population decreased and concentrated into the Arctic and sub-Arctic areas, but the species survived, adapting to the changing environment.
(their population; decreased; ) (the species; survived; ) Context(the species survived,List([97, 117))):(the species; survived adapting; to the changing environment)
the species survived,List([97, 117))
their population the species the species
decreased survived survived adapting
to the changing environment