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"An Ecosystem's Disturbance by a Pollutant
Paul Cordova
L. Lehr
December 11, 1995
Freedman defines a pollutant as "the occurrence of toxic substances or energy in
a larger quality then the ecological communities or particular species can
tolerate without suffering measurable detriment" (Freeman, 562). Although the
effects of a pollutant on an organism vary depending on the dose and duration
(how long administered). The impact can be one of sublethality to lethality, all
dependent upon the factors involved. These factors need to be looked at when
determining an ecosystem's disturbance by a pollutant.
Some of the most frequent pollutants in our ecosystem include: gases such as
sulphur dioxide, elements such as mercury and arsenic, and even pollution by
nutrients which is referred to as eutrophication. Each of these pollutants pose
a different effect on the ecosystem at different doses. This varied effect is
what is referred to as dose and duration. The amount of the pollutant......
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Title: An Ecosystem's Disturbance By A Pollutant
Approximate Word Count: 2757
Approximate Pages: 12 (250 words per double-spaced page)
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An Ecosystem's Disturbance By A Pollutant
an Ecosystem's Disturbance By A Pollutant. ... These factors need to be looked at
when determining an ecosystem's disturbance by a pollutant. ... ... -
An Ecosystem's Disturbance By A Pollutant
an Ecosystem's Disturbance By A Pollutant. ... These factors need to be looked at
when determining an ecosystem's disturbance by a pollutant. ... ...
