Page 5 - Key to Social Studies 2 (Workbook)
P. 5

3        HUMANS AND THE ENVIRONMENT

                                   LESSON 9
                                                 The Environment                                               36
                                   LESSON 10
                                                 Natural Resources                                             40
                                   LESSON 11
                                                 Recycling                                                     44
                                   LESSON 12
                                                 Endangered Animals and Plants                                 48































































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