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Unformatted text preview: useful energy decreases when energy transformations occur", which means there is a tendency for all systems to reach the lowest possible energy or increase the amount of disorder in the system. This is the famous entropy law. Entropy is the measure of the amount of disorder (loss of higher level energy) in a system. Useful is the critical term here. The amount of energy doesn't change, but the ability of that energy to do the work we need accomplished diminishes. Most entropy is measured in increasing amounts of heat energy released by the system. We can also see increasing entropy when an organism decomposes. The decaying cells are far less "ordered" than when they were alive and functioning....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10