Ecosystems: Teacher's Guide (1992)

Chapter: What Happened to Our Ecosystems? Coming to Conclusions

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Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 142 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 143 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 144 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 144
Page 145 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 145
Page 146 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 147 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 148 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 148
Page 149 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Page 149
Page 150 Cite Bookmark
Suggested Citation: "What Happened to Our Ecosystems? Coming to Conclusions." National Research Council. 1992. Ecosystems: Teacher's Guide. Washington, DC: The National Academies Press. doi: 10.17226/20934.
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Next Chapter: Examining a Real Environmental Problem
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