Human Influences Flashcards
Suphur dioxide
Impurities in crude oil
Volcanos
Acid rain, damages crops, aquatic life, buildings, trees
Reduce burning ff, clean waste gases
Carbon monoxide
Incomplete combustion
Car exhausts, cigarettes, volcanos
Carboxyhaemoglobin, death
Catalytic converters
GH gases
Water vapour, CO2’ nitrous oxide, methane, CFC
FF burning, respiration, populations, cows
Global temp rises, ice caps melt, sea levels rise, extreme weather
Renewable power, reduce emissions, Ben CFC, catalytic converter
Ozone layer
Prevents dangerous rays reaching earth
Ozone is a gas present in the atmosphere
CFC cause holes
Acid rain
Sulphur oxide, nitrous oxides
Dissolve in water, form acids
Emitted by cars, fuel burning
Damages buildings, stone, trees, acidified lakes and rivers
GH gases
Essential for life on earth, without the planet would be cold
GH gases in atmosphere
Currently, enhanced effect
Too many gases
Global warming
Enhanced GH effect
Melting ice caps, rising sea levels
Loss of habitat, extreme weather
Greenhouse effect
Shortwave radiation from sun comes through atmosphere, warms ground
Earth absorbs some radiation, reflects some back into atmosphere as long wave radiation
Most radiation stopped from escaping from earth by GH gases, warming earth up more than it would normally be
Sources of water pollution
Agriculture (fertiliser, soluble in water)
Sewage
Industrial chemicals
Prevent pollution in U.K.
Treatment plants
Where will these methods not be used
Developing countries
Repercussions
Diseases spread
Sewage
Waste water from houses and industry
Urine faeces, contaminated with disease
Sewage contains nutrients for bacteria
Fertilisers in water
Very soluble in water
Hard to remove
Eutrophication
Eutrophication
Nitrate levels rise, algae grow rapidly
Algal bloom
Prevent light from penetrating into water
Submerged plants, no photosynthesis and die
Algae die
Bacteria decay dead plants, algae
Bacteria reproduce, respiration uses oxygen
Anoxic, all life dies
