Global Warming Since the Mid- 1970s Has Been About________

Q1: The climate system consists of the_ .<br>A)biosphere<br>B)geosphere

Q2: Gases are called _gases because their concentrations

Q3: Oxygen isotopes (18O and 16O)are used to

Q4: What are the significant differences between global

Q6: Discuss the three major volcanic events covered

Q7: The _ isotopes in the hard skeletons

Q8: Gases are selective absorbers and _ of

Q9: What are some of the human impacts

Q10: Types of climate- feedback mechanisms consist of

Q11: Explain why the atmosphere is heated mostly