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Env Science Week 3
Week 3 Vocabulary for Environmental Science
Term | Definition |
---|---|
population dynamics | the study of factors that affect the three phases of a population's life cycle (growth, stability, decline) |
equilibrium | when there are equal numbers of births and deaths in a population |
population explosion | rapid, exponential growth of a population; represented by a J-curve |
biotic potential | when all of the individuals ever born in a population grow to adulthood and reproduce the maximum number of times |
limiting factors | environmental resistance; a combination of the living & nonliving factors that may limit or stop a population's growth |
carrying capacity | greatest number of individuals that can be sustained or supported by an area without the ecosystem breaking down |
extinction | when all of the individuals in a group die |
overkill | shooting, trapping, or hunting a species (often for sport or economic reasons) that results in a rapid decrease in the population's numbers |
secondary extinction | when the death of one species causes the decline of another species (i.e. loss of bamboo causes panda population to decline) |
minimum viable population | smallest population size that can avoid an extinction by environmental or genetic factors |
geographic range | total area occupied by a species |
biodiversity | all of the different living organisms in an area (variety of life) |