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Dr. Keeling's scientific reports from Mauna Loa in Hawaii demonstrated the ‘Keeling Curve’, which showed ________. a)an increase in tropospheric CO2 from the 1950s to present. b)that sediments deposited
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Dr. Keeling's scientific reports from Mauna Loa in Hawaii demonstrated the ‘Keeling Curve’, which showed ________.

a)an increase in tropospheric CO2 from the 1950s to present.
b)that sediments deposited on the seafloor can yield clues about past climates.
c)that as distances from cities decreased, smog increased.
d)that atmospheric CO2 levels have been stable over the last 40 years.

User Anson Miu
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Answer:

A

an increase in tropospheric CO2 from the 1950s to present.

Step-by-step explanation:

User Rajat Shenoi
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