By Measuring the CO₂ Concentration in the Vostok Ice Core

question 1

Multiple Choice

By measuring the CO₂ concentration in the Vostok ice core, scientists were able to show that atmospheric CO₂ concentrations fluctuated substantially over the last 160,000 years and periods of low atmospheric CO₂ concentration correspond with

• A) warmer interglacial periods.
• B) colder ice age periods.
• C) years of above average precipitation.
• D) years of below average precipitation.
• E) both warmer interglacial periods and years of below average precipitation.

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