Your old roommate is in australia on a one-year study abroad program. she excitedly skypes you and says her aborigine friend mentioned an australopithecine skull he discovered while on "walkabout" in the desert. the skull has a small brain and shows some wear on the tip of the canines. you respond that

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

either wyoming or idaho