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11-30-07 - BIO 311D 9:10:00 AM Human population explosion...

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BIO 311D 30/11/2007 10:10:00 Human population explosion due mainly to technology, advances in medicine, and other things that  decreased the death rate and increased the birth rate COMMUNITY ECOLOGY Key Concepts a habitat is a type of place where individuals of a species normally live a community is defined as a group of species living together close enough for  potential contact every species in a community has a niche interactions among species influence the structure of the community dominant species are those in a community that have the highest abundance  or highest biomass keystone species exert an important regulating effect on the other species in  the community Ecosystem and communities ecosystem: all factors affecting an organism’s survival: abiotic and biotic
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