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Unformatted text preview: Sheet1 Page 1 ECOLOGY Ecology: Study of relationship of organisms w/ the environment Abiotic: nonliving & biotic: living System: two basic types: open & closed Open=energy flows through, matter flows through Closed = energy flows through, matter conserved Energy Flow-Energy always has to flow through a system-2nd law of thermodynamics: entropy (everything goes to disorder)-most energy fixed into an ecosystem via photosynthesis-plants convert 1% of suns energy to glucose Autotrophs (self feeders) v. heterotrophs (other feeders)-plants -energy from other-major components of an ecosystem: producers, consumers, decomposers Aspects of production: production, biomass, primary productivity (gross + net), secondary productivity Gross primary productivity: total amount of energy Net primary productivity: left over after plant uses E Secondary productivity: increased by heterotrophs (something you make, like milk)-tropic level (feeding level): 10% passed from lower to higher levels Factors affecting productivity:...
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