This teacher website provides a comprehensive lesson unit on the structure of Earth's atmosphere and how it sustains and impacts life on Earth and its ecosystems. Includes labeled diagrams, student worksheets, a slideshow, flashcards,...

This superb site has detailed information about the composition of the atmosphere, how it is always changing, how it protects life on earth, and the destructive impact human activity has on it. There is an atmosphere design lab, as well...

A review, including notes and labs, of a Petrology course provided b MIT. Petrology is the study of the history and chemical make up of rocks.

This concise resource presents a thorough drawing which simplifies the explanation of the greenhouse effect into six easy to understand steps.