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Unformatted text preview: Negative feedback = when the system is altered, it returns to its original state, like a thermostat (see dynamic equilibrium) Positive feedback = when the system is altered, it reacts by moving further from its original state, usually reaching a new state of equilibrium. o A good example of this is the exponential phase of population growth. As the population density increases, it makes reproduction easier. Eventually negative feedback will limit the positive feedback. o Another good example is how oxygen depleted dead zones can become self perpetuating. Invasive species = a species which is introduced to an ecosystem which spreads and out-competes native species...
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This note was uploaded on 10/20/2011 for the course ZOO 121 taught by Professor Russell during the Spring '08 term at Miami University.
- Spring '08