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http://www.havefunteaching.com/worksheets/science-worksheets/environments-worksheets/pollution-worksheet
pollution worksheet, resources worksheet, environment worksheet, environmental science
http://www.havefunteaching.com/worksheets/science-worksheets/environments-worksheets/pollution-worksheet
recycling worksheet, resources worksheet, earth science worksheet, environmental science
http://www.havefunteaching.com/worksheets/grade-level-worksheets/first-grade-worksheets/recycling-worksheet-1-recycling-sort
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