Equipment required: A hair dryer, two glass beakers, glasses or glass jars, two thermometers, and enough water to fill one of the beakers or glasses. Fill one beaker with tap water at room temperature and leave the other one empty. Place a thermometer in each beaker. Set the two beakers side-by-side and record the temperatures in each beaker. Using the hair dryer, blow hot air evenly for several minutes on the two beakers and monitor the temperatures in each beaker. How do the two beakers respond to the hot air?

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.