Geography 2310A/B Study Guide - Biogeochemical Cycle, Carbon Cycle, Nitrogen Fixation
26 Nov 2014
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Document Summary
Constant gases gases that have consistent concentrations across the atmosphere, up to a height of about 80 km. Variable gases gases that have different concentrations in different areas of the atmosphere and at different times. The ozone layer is between the stratophase and the trophophase. Water vapour is the most viable gas in the atmosphere. Residence time- the average amount of time that a substance might be expected to remain in a reservoir of the earth- atmosphere system. Biogeochemical cycle- the model that describes how an element or compound in transferred between the atmosphere, rocks, water, and the life of the earth. Steady state exists when the inflows to a reservoir are equal to the outflows from that reservoir. Nitrogen fixation the process by which nitrogen gas is removed from the atmosphere and converted to a soluble form of nitrogen that can be taken up by plants.
