The amount of C 
in the atmosphere is higher now than any time in the last 800,000 years.
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Q98: What two pollutants react with water to
Q99: The lower the pH of a liquid
A)
Q100: Industrial smog is
A) associated with photochemistry.
B) principally
Q101: Which of the following is not sited
Q102: Weather (rain, fog, storms, etc.) occurs primarily
Q104: Despite the thermosphere's high temperature, the density
Q105: Based on the criteria of composition, the
Q106: The ionosphere resides principally within the thermosphere,
Q107: Because percentage of carbon dioxide in the
Q108: According to the EPA, the direct benefits
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