Using the chart, "CO2 and Global Temperature Trends, 1960-2005,"answer the questions that A) As average global temperature rises, what happens to the overall average precipitation? Why?
B) What does CO2 and other greenhouse gases do in the atmosphere?
C) Describe 4 ways a temperature increase of only 1°C (global warming) would impact humans and/or
ecosystems.

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.