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Chapter 38

Chapter 38: Global Change

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Activities & Tutorials

38.1: Activity: Land transformation: A city growing over time
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See how urban areas in the San Francisco Bay region changed from 1800 to 1900.

38.2: Tutorial: The nitrogen cycle
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This tutorial examines how atmospheric nitrogen is converted to a form that can be used by plants and animals, and then returned to the atmosphere.

38.3: Tutorial: The carbon cycle
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This tutorial explores how the increased concentrations of CO2 contribute to global warming.

38.4: Activity: Are global temperatures rising?
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This simulation offers a practical lesson on interpreting data presented in graphs.

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