Upon What Evidence Did Agassiz Base His Ice Age Theory

question 38

Multiple Choice

Upon what evidence did Agassiz base his ice age theory?

• A) glacial landscapes in the Swiss Alps that extended far beyond existing ice fronts
• B) astronomical calculations for cyclic variations in Earth's orbit
• C) stacks of glacial drift with intervening "warm period" soil horizons
• D) spectroscopic measurements for variations in the solar output

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Definitions:

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