APES units
Unit 1: Earth Systems and Resources (Ch. 1-3)
Unit 2: The Living World (Ch. 4-8)
Unit 3: Sustaining Biodiversity (Ch. 10-12)
Unit 4: Land and Water Use (Ch. 13-14)
Unit 5: Energy Resources and Consumption (Ch. 15-17)
Unit 6: Pollution (Ch. 18-22)
Unit 7: Global Change (Ch. 9, 23-26)
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