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The top documents tagged [year old roots]
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Weeds Objective: Students will identify and scout for common and edible weed pests in the garden
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When is the Permafrost Carbon Tipping Point?
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Global Climate Impacts of Thawing Permafrost National Snow and Ice Data Center, University of Colorado Tingjun Zhang Kevin Schaefer Tim Schaefer Lin Liu
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Global Climate Impacts of Thawing Permafrost
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