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Lesson Planet
If you need a comprehensive review of the development of Earth's atmosphere through the ages, then this is for you! The presentation starts with a introduction to theories of planet formation and initial distribution of isotopes in the layers of crust and atmosphere. The theories and evidence of the roles of living things in impacting the composition through to a recent time period are complete. This long presentation and may inspire valuable research projects. Note that there are almost no visuals, so this is best used with the highly motivated.
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