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2015
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6000 years ago the Sahara was greener until the rains moved south. Was Central Africa much drier back then? Was there as much rainforest?
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When scientists use dendrochronolgy to study climate, how do they know when a stunted year is due to climate versus pests or other factors?
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6000 years ago the Sahara was greener until the rains moved south. Was Central Africa much drier back then? Was there as much rainforest?
12
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When scientists use dendrochronolgy to study climate, how do they know when a stunted year is due to climate versus pests or other factors?
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