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Environmental Bio 2

QuestionAnswer
eutrophication increase in the concentration of chemical elements required for living things. May lead to population increase.
oligotrophic referring to bodies of water having a low concentration of the chemical elements required for life.
benthic plants plants that are rooted at the bottom of water, such as lily pads.
point source source of pollution such as smokestacks, pipes, or accidental spills that are readily identified and stationary.
nonpoint source pollution source that is diffused and intermittent and influenced by factors such as land use, climate, hydrology, topography, native vegetation, and geology
biochemical oxygen demand a measure of the amount of oxygen necessary to decompose organic material in a unit volume of water.
exponential growth rate the annual growth rate is a constant percentage of the population
carrying capacity the maximum abundance of a population or species that can be maintained by a habitat or ecosystem without degrading the ability of that habitat or ecosystem to maintain that abundance in the future.
logistic growth a small population grows rapidly, but the growth rate slows down, and the population eventually reaches a constant size
total fertility rate the average number of children expected to be born to a woman during her lifetime
replacement level fertility the fertility rate required for the population to remain at a constant size.
doubling time the time necessary for a quantity of whatever is being measured to double.
demographic transition the pattern of change in birth and death rates as a country is transformed from undeveloped to developed.
Created by: emulligan
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