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the atmospheric pressure conditions corresponding to the periodic warming of El Nino and cooling of La Nina
Souther Oscillation
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species that originate and live in an area or environment
indigenous species
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transition in species composition of a biological community
ecological succession
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states that no two species can occupy the same niche at the same time
Gause's principle
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the process by which specialized bacteria convert ammonia to nitrogen and release it back into the atmosphere
denitrification
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a stable, mature community in a successive series that has reached equilibrium after having evolved through stages and adapted to its environment
climax community
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the process in which plants absorb ammonium, ammonia ions, and nitrate ions through their roots
assimilation
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the region draining into a river system or other body of water
watershed
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a process in which cold, often nutrient rich waters from the ocean depths rise to the surface
upwelling
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the constant winds blowing in horizontal directions over the earth's surface, as part of Hadley cells
trade winds
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a layer in a large body of water, such as a lake, that sharply separates regions differing in temperature
thermocline
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in tectonic plates, the site at which an oceanic plate is sliding under a continental plate
subduction zone
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a bloom of dinoflagellates that causes reddish discoloration of coastal ocean waters.
red tide
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when water rights are given to those who have historically used the water in a certain area
prior appropiation
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the edges of tectonic plates
plate boundaries
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