SCIN 138 INTRODUCTION TO PHYSICAL GEOLOGY WEEK 7 EXAM [Complete solutions]

Question 1 of 25 4.0/ 4.0 Points The process by which increased levels of CO2 in the atmosphere lead to enhanced growth of vegetation, which then removes CO2 from the atmosphere through photosynthe sis is termed a _____.  A. Milankovitch Cycle  B. negative feedback  C. sink  D. reservoir  E. positive feedback Question 2 of 25 4.0/ 4.0 Points Evidence of recent climate change is found in _____.  A. all of the above  B. decreased crop yields  C. reduction of sea ice  D. ocean acidification Question 3 of 25 4.0/ 4.0 Points To distinguish between weather and climate, many scientists use a/an _______year average of data.  A. 10  B. one  C. 50  D. 30  E. 100 Question 4 of 25 4.0/ 4.0 Points Past climate is best extrapolated by comparing isotopes of _____ gas.  A. carbon  B. argon