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Nitrogen Fixation

TermDefinition
nitrogen fixation the process through which atmospheric nitrogen is transformed into ammonium.
nitrogen the most abundant gas in the atmosphere
N the symbol for nitrogen
NH 3 the symbol for ammonia
Nitrogen, Phosphorus and potassium The three primary soil nutrients
legumes plants whose root systems contain nodules of symbiotic bacteria called rhizobia.
rhizobia bacteria convert atmospheric nitrogen into nitrates
examples of legumes soybeans, peas, clover, peanuts, and alfalfa.
ammonification the process through which bacteria or fungi convert organic nitrogen from a decaying plant or animal into ammonium.
nitrifying bacteria bacteria in the soil convert ammonia into nitrates
NO 3 the symbol for nitrate
nitrification the process that converts ammonia into nitrates
nitrates the plant-usable forms of nitrogen.
denitrification the conversion of nitrates into inert atmospheric nitrogen.
denitrifying bacteria bacteria in the soil that convert nitrates to atmospheric nitrogen
7 the position of nitrogen on the Periodic Table of Elements.
water-soluble substances that can easily dissolved in water.
algae bloom excessive algae growth.
weathering changing rocks to soil
soil erosion the wearing away of the top layer of soil by wind or water.
wind-breaks rows of trees planted on the western edge of a field that create a natural barrier to slow the flow of wind and minimize wind erosion
leaching water dissolves minerals and moves them deeper within the soil profile.
acidic soil type of soil that has a pH less than 7
alkaline soil type of soil hat has a pH that is more than 7.
Created by: CAHS SCIENCE 09
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