Instructions: Choose One Answer from Each Pair of Selections

Q6: Over the past 100 years or so,it

Q23: It is now known that,overall,clouds<br>A) have a

Q23: During the climatic optimum, _.<br>A) the climate

Q25: Climate models predict that oceans will warm

Q26: Instructions: Choose one answer from each pair

Q27: Which decade was the warmest on record?<br>A)

Q29: Ozone is a greenhouse gas that _

Q30: Instructions: Choose one answer from each pair

Q31: Instructions: Choose one answer from each pair

Q43: The higher the ratio of oxygen 18