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graph of four historical warm periods
A '''warm period''' in the earth's history is a time when global temperatures are significantly warmer than average. Every warm periods in the past has been preceded by a cool period.
A '''warm period''' in the earth's history is a time when global temperatures are significantly warmer than average. Every warm periods in the past has been preceded by a cool period.
==External Links==
*[http://climate.geologist-1011.net/HoloceneTemperatures.png graph of four historical warm periods]
[[Category:Warm Periods]]
[[Category:Warm Periods]]