Assertion: squirrel | /r/AtLocation | northern ranges of the species
Facets:
Source sentences:
text: Several theories have surfaced as to why the black morph occurs, with some suggesting that the black morph is a selective advantage for squirrels inhabiting the northern ranges of the species, with the black-fur providing a thermal advantage over its non-melanistic counterpart.
text: The black-coat has been suggested as a selective advantage for squirrels inhabiting the northern ranges of the species, as it helps them inhabit colder regions.