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AP Environmental Science: ch 4 Flashcards

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Textbook: Living in the Environment, Miller & Spoolman

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891304948biodiversityvariety of species, genetics, ecosystems1
891304949speciescan produce fertile offspring2
891304950biometerrestrial regions inhabited by life3
891304951evolutiongenetic change over time4
891304952natural selectionorganisms better adapted survive5
891304953artificial selectionhumans select desirable traits6
891304954mutationrandom changes in DNA molecules7
891304955adaptationcharacteristic that helps organisms survive8
891304956differential reproductionadapted individuals produce more offspring9
891304957geographic isolationpopulations separate into different areas (allopatric)10
891304958reproductive isolationseparation of sexually reproducing species11
891304959extinctioncomplete disappearance of species12
891304960background extinctionnormal extinction of various species13
891304961mass extinctionspecies disappear in short period14
891304962endemic speciesspecies found in one area15
891304963species diversityspecies richness and species eveness16
891304964nicherole of species in ecosytem17
891304965generalist specieshave broad niche18
891304966specialist specieshave narrow niche19
891304967native speciesnormally live in particular ecosytem20
891304968nonnative speciesmigrate into an ecosystem21
891304969indicator speciesdecline warns against ecosytem degradation22
891304970keystone speciesaffect many organisms in ecosystem23
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