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Nottingham, NH, United States
I'm a middle school teacher and science and books are two of my favorite things! (Chocolate and coffee are pretty high up on the list as well)

Monday, September 24, 2012

The Carbon Cycle Changes

The Carbon Cycle Changes:  The Carbon Cycle isn't static - it changes. During the Paleozoic Era, volcanic ash caused a big fluctuation in our climate and the Earth got warmer.  Global warming has happened before, but the Earth hasn't had such high levels CO2 to contend with.

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