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13 Will Children Save the Earth?
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  | ecology, eco-XXXX environment global warming greenhouse gases carbon footprint butterfly effect / law of unintended consequences recycling conservation (energy, resource) overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation overpopulation evolution natural selection extinct endangered species / protected species
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  | What do you think of Mrs. Gray’s complaint?
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  | What do you think about Matthew’s suggestions on p. 60.
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  | What are the biggest environmental problems we face today? The biggest?
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  | What do you do in your daily life to help the environment?
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  | Are your ideas about the environment very different from your parents’ or grandparents’?
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  | Discuss the map on t.he bottom of p. 60
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  | What will our environment be like 25, 50, 100 years from now?
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  | To some degree extinction of species is a natural phenomenon. How much should man interfere?
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