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A LEVEL ENVIRONMENTAL SCIENCE: The Atmosphere exam study guide
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A LEVEL ENVIRONMENTAL SCIENCE: The Atmosphere exam study guide
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A LEVEL ENVIRONMENTAL SCIENCE:The Atmosphere exam study guide
composition of the atmosphere - Answer>> oxygen = 20.95%
carbon dioxide = 0.4%
nitrogen = 78.09%
water vapour = 1%
ozone = 0.000004%
other = <1%
anthropogenic sources of oxygen - Answer>> N/A
natural sources of oxygen - Answer>> - wildlife and vegetation
(respiration/photosynthesis)
- decomposition of dead plants and animals
importance of oxygen - Answer>> necessary for organisms to
breathe and respire and complete natural processes.
anthropogenic sources of carbon dioxide (CO2) - Answer>> -
burning fossil fuels
- farming and forestry
- cement manufacture
- aerosols
natural sources of carbon dioxide (CO2) - Answer>> -
decomposition
- ocean release
- respiration
- magma degassing
importance of carbon dioxide (CO2) - Answer>> important for
plants to photosynthesise
, anthropogenic sources of nitrogen - Answer>> - direct
agricultural emissions
- emissions from livestock
- indirect agricultural emissions
natural sources of nitrogen - Answer>> - chicken/poultry
manure
- soil nitrates
importance of nitrogen - Answer>> important in industry
anthropogenic sources of ammonium (NH4) - Answer>> -
agricultural operations
- cereal fields
- land transport
- highways
- burning of fossil fuels
natural sources of ammonium (NH4) - Answer>> - manure
- slurries
importance of ammonium (NH4) - Answer>> N/A
anthropogenic sources of water vapour - Answer>> - burning of
petroleum
- burning of natural gas
natural sources of water vapour - Answer>> evaporation from
large bodies of water
importance of water vapour - Answer>> N/A
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