Question

How does the modern global climate compare with that of 400,000 and 800,000 years ago? How do we know? 

   How does the modern global climate compare with that of 400,000 and 800,000 years ago? How do we know?
Environmental Science: Toward a Sustainable Future
Environmental Science: Toward a Sustainable Future
Richard T. Wright,… 13th Edition
Chapter 18, Problem 4 ↓

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Comparison of Modern Global Climate with 400,000 and 800,000 years ago: To compare the modern global climate with that of 400,000 and 800,000 years ago, scientists primarily rely on ice core data. Ice cores are cylindrical samples of ice drilled from ice sheets or  Show more…

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