This article discusses the importance of teaching current environmental issues through laboratory exercises. It describes the methods that would be used in a lab exercise involving tree measurement to explain biogeochemical cycling of carbon in the atmosphere.
details of the lab will be helpful for the instructors to try the exercise as an out door laboratory experience
I'd be happy to answer any questions or provide additional information. Also, please note the article contains a numerical error. In the appendix is a formula for the amount of carbon in each liter of gasoline. The correct value is 591 g C/L of gasoline. (The value originally printed was 49.3 g C/L.)
Sample data from previous experiments and more details on how to set up a laboratory exercise would have been helpful for instructors to design an outdoor lab for intro level students.
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