Lesson Plan

Lesson Preview

Lesson Preview

This lesson will explain

• the thermal structure and chemical composition of the atmosphere,
   
• how the composition of the Earth's atmosphere has evolved over geologic time including out gassing, the origin of atmospheric oxygen, and
   
• the location of the ozone layer in the upper atmosphere, its role in absorbing ultraviolet radiation, and how it varies both naturally and in response to human activities.

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B. J. Subbiondo © 2004