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Principles of Evolution, Ecology and Behavior - Lecture 30

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Lecture 30 - Energy and Matter in Ecosystems

The movement of matter and energy around the planet is very important, and its study draws on geology, and meterology in addition to chemistry. Energy tends to flow upwards from plantlike producers to herbivores to carnivores before being decomposed by detritovores and cycling back into energy usable by producers, in addition to the photosynthesis or chemosynthesis used by producers to produce energy. Like energy, compounds vital to life such as carbon, nitrogen, and phosphorous flow around the planet in cycles.

Prof. Stephen C. Stearns
EEB 122: Principles of Evolution, Ecology and Behavior, Spring 2009
(Yale University: Open Yale)
http://oyc.yale.edu
Date accessed: 2009-11-18
License: Creative Commons BY-NC-SA

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