8. Connect to Nature of Science Much of the world's population lives along plate boundaries, particularly those in coastal areas. Why do you think people continue to live in areas prone to
earthquake hazards? How do you think scientific knowledge can help people living in these
areas?

What is thought to have caused the mass extinction at the end of the cretaceous period?

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.

Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? a. h2o b. o2 c. h2po4 d. glucose e. na+