Effects Of Pollution

Geography
AIR POLLUTION
presence of one or more noxious gases and particulates in harmful concentrations in the air which may be harmful to life.
CARBON MONOXIDE
damages lungs,weakens bones,reduces O2 carrying capacity of blood,damages heart.
SULPHUR DIOXIDE
obstructs breathing,causes irritation of eyes and throat.
SUSPENDED PARTICULATE MATTER
causes asthma,irritation of eyes,cancer.
OXIDES OF NITROGEN
cause acute respiratory infections,bronchitis,lowers resistance to influenza.
HYDROCARBONS
affect the respiratory system.
OZONE
causes irritation of eyes,aggravates asthma.
LEAD
causes brain damage,affects growth,leads to high blood pressure.
ARSENIC
damages kidney,causes jaundice,lung and skin cancer.
SHORT TERM EFFECTS OF AIR POLLUTION
irritation of eyes,nose,throat.respiratiory infections like bronchitis,pneumonia.headaches,nausea,convulsions,allergic reactions.slurring of speech.
LONG TERM EFFECTS ON AIR POLLUTION
chronic respiratory disease,lung cancer,cardiovascular diseases,coma,damage to nerves,brain,liver,kidney.
SO2
bleaches surface of leaves,causes loss of chlorophyll,results in yellowing of leaves,particularly in leafy vegetables.
NO2
results in premature falling of leaves,suppressed growth of plants.leads to reduced yield of crops.
O3
damages leaves of plants.
PAN – PEROXYACETYL NITRATE
damages leafy vegetables,causes premature fall,discoloration,curling of sepals.
EUTROPHICATION
process of depletion of O2 from water-bodies occurring naturally or due to human activities.
BIO-MAGNIFICATION
increasing concentration of various toxic substances along food chain.
BIO-ACCUMULATION
phenomenon of concentrated toxic deposition at higher trophic level.
RADIOACTIVE POLLUTION
caused by testing of nuclear weapons,establishment of nuclear power plants,mining,refining of radioactive substances.
GENETIC VARIATION
damage caused by radiations may be transmitted to many generations.
SOMATIC VARIATION
short term exposures to radiation cause damage to organs of body.harm done include breast,thyroid,lung,brain cancers,sterility,defective eyesight.
BHOPAL GAS TRAGEDY
worst industrial accident-december 3,1984-bhopal,madhya pradesh,india-40 tons of methyl isocyanate(MIC)gas leaked into atmosphere-3500 people killed-40000 people were affected in area of 100 sq.km.
CHERNOBYL DISASTER
radioactive accident-april 26,1986-chernobyl,ukraine(formerUSSR)-reactor at nuclear power complex exploded-radioactive material released by explosion was 400 times more than that of hiroshima-7,00,000 people exposed to chernobyl radiation all over europe.

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