Compare the skull size of humans and chimps. What accounts for the difference in size?

Scientists have shown that the prefrontal cortex (the front part of the brain) contributes to the intelligence of humans. What conclusion can you form with this information and the comparison you made about skull and brain size?

What are some of the effects of the evolutionary changes in brain and jaw size of humans?

What have you learned about the evolution of humans?

What is ONE question you have about the topic that the video did not answer?