Thick fur can be used for keeping warm.
Pelts are the skins of animals with the fur attached.
A thick pelt can be used for keeping warm.
What can be used by an animal to keep warm?
Options:
(a) a thick pelt
(b) heat energy
(c) evaporation
(d) energy
(e) kinetic energy
(f) electricity
(g) four limbs
(h) organic molecules