Human adaptations do not exist independently of one another. In real life, of course, each population, and each individual within that population, has numerous coexisting adaptations. Ignore what you know of your family history and consider only your own physical traits for the following adaptations: skin color, lactose tolerance, and body shape. Place marks on the map on p. 251 of your lab manual to show in which parts of the world each of these traits may have originated in your ancestors. (Be sure to label the marks to indicate which trait is being mapped.) Do all three of your traits suggest similar ancestry?

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.