A"motor homunculus" can be visualized as an overlay on the precentral gyrus. the reason the facial region of this homunculus covers such a large surface area is that a "motor homunculus" can be visualized as an overlay on the precentral gyrus. the reason the facial region of this homunculus covers such a large surface area is that: a) we have very expressive faces. b) we have very sensitive lips. c) our ears are large for hearing. d) our eyes are large for seeing.

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.