The Eastern grey squirrel lives mostly in oak trees that have a medium gray bark. In some cities, oak tree bark is darkening due to air pollution. This Eastern grey squirrel shows melanism, or the increase in black pigment in its fur. What is MOST LIKELY the reason for the change in fur color?
a.With age; this is a very old squirrel.
b.Squirrels from another region moved into the area.
c.It is a way to help the grey squirrel attract a mate.
d.It is a way to camouflage the squirrel in a changing habitat.

Question

The Eastern grey squirrel lives mostly in oak trees that have a medium gray bark. In some cities, oak tree bark is darkening due to air pollution. This Eastern grey squirrel shows melanism, or the increase in black pigment in its fur. What is MOST LIKELY the reason for the change in fur color?
a.With age; this is a very old squirrel.
b.Squirrels from another region moved into the area.
c.It is a way to help the grey squirrel attract a mate.
d.It is a way to camouflage the squirrel in a changing habitat.

anonymous · Answer

This is most likely D, this change in camouflage helps hide them from predators. However, this effect isn't well documented. The only known example I have been made aware of was Moths that turned darker for the exact same reason. However the scientists glue'd different color moths onto trunks and ended up being discredited. Thats probably the answer they are looking for , but be mindful of the material you are being taught.