Environmental Science Chapt 3

52 terms by aprewett Plus

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adaptation

Physical changes that allow organisms to survive in a given environment.

natural selection

The mechanism for evolutionary change in which environmental pressures cause certain genetic combinations in a population to become more abundant; genetic combinations best adapted for present environmental conditions tend to become predominant.

selection pressures

Limited resources or adverse environmental conditions than tend to favor certain adaptations in a population. Over many generations, this can lead to genetic changes, or evolution.

critical factors

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tolerance limits

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indicators

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habitat

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ecological niche

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endemic species

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competitive exclusion principle

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resource partitioning

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speciation

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geographic isolation

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allopatric speciation

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sympatric speciation

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binomials

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intraspecific competition

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interspecific competition

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predator-mediated competition

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coevolution

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batesian mimicry

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müllerian mimicry

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symbiosis

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mutualism

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commensalism

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parasitism

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keystone species

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biotic potential

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exponential

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J curve

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carrying capacity

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logistic growth

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density-dependent

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r-related species

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k-selected species

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diversity

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abundance

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community structure

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core habitat

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ecotone

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edge effects

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complexity

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resilience

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primary productivity

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net primary productivity

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stability

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climax community

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primary succession

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secondary succession

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pioneer species

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disturbance

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disturbance-adapted species

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