Approximately 125,000 years ago, temperatures were warmer than current temperatures, yet atmospheric CO2 were lower than present. How do scientists account for this lower-than-expected atmospheric CO2 concentrations?
A) Much higher photosynthetic activity due to differences in plant life.
B) Dilution of atmospheric CO2 by large inputs of water vapor from increased evapotranspiration.
C) Absorption of excessive CO2 by oceans.
D) Linking the higher temperatures to causative factors other than CO2 concentrations.
E) Scientists do not account for the difference, indicating that anthropogenic climate change is a hoax.
C
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