How much did the average surface temperature increase during the twentieth century?
A) approximately 0.3°C
B) approximately 0.6°C
C) approximately 1.2°C
D) approximately 2.4°C
Correct Answer:
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Q5: Which of the following statements regarding ozone
Q25: The biosphere is composed of
A)plants living near
Q26: The process whereby warm water from equatorial
Q27: Weathering of carbonate and silicate rocks
A)adds carbon
Q29: What is the chemical formula for ozone?
A)O
B)O2
C)O3
D)O4
Q31: What proportion of the total amount of
Q32: Chemical analysis of ice cores demonstrates that
Q33: Which of the following carbon fluxes is
Q34: The residence time of sodium in the
Q35: Which of the following has dramatically changed
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