Hominins are any hominids that were __ (walked).

• bipedal

• swimmers

• flew
• crawled

Humans expend 70% less calories __ compared to an ape.

• walking

• climbing

• swimming

• mating

Positive feedback loop: Increases tool use → increases food processing → decreased __ size → increases brain size.

• jaw

• lung
• heart
• stomach

Homo ______ was the longest living Homo species.

• Homo erectus
• Homo neanderthalensis
• Homo habilis
• Homo sapiens

Homo __ had their own language, wore clothes/jewelry, buried dead and made cave art.

• Australopithecus

• Homo habilis
• Homo sapiens
• Homo erectus

Which of the following is NOT a characteristic of apes?

• Excellent vision with forward facing eyes

• Dexterity with 5 fingers and an opposable thumb

• Large brains relative to body size

• Claws instead of nails

When did the common ancestor of humans and chimpanzees live?

• 1 million years ago

• 4 million years ago

• 7 million years ago

• 12 million years ago

Which hypothesis explains why there are still other apes if humans evolved from them?

• Sympatric speciation

• Adaptive radiation

• Positive feedback loop

• Extinction of Neanderthals

When did humans and chimpanzees share a common ancestor?

• 2 million years ago

• 7 million years ago

• 15 million years ago

• 20 million years ago

What is a characteristic that separates humans from other apes?

• Loss of forward-facing eyesight

• Presence of a tail

• Bipedalism

• Few offspring