2. ENVIRORNMENT MEANS ALL
THAT ENVIRORNS (
SURROUNDS ) US.
ELEMENTS OF ENVIRORNMENT
ENVIRONMENT
NON-LIVING
LIVING
ATMOSPHERE HYDROSPHERE LITHOSPHERE
INTRODUCTION
3. ENVIRORNMENTAL POLLUTION
ENVIRORNMENTAL POLLUTION MEANS
POLLUTION OF THREE SEGMENTS
AIR(ATMSPHERE),LAND(LITHOSPHER
E) & WATER(HYDROSPHERE).
POLLUTION :- POLLUTION MEANS
UNWANTED CHANGES IN OUR
SURROUNDING THAT HAVE ADVERSE
(HARMFUL)EFFECTS ON
4. 1. RAPID INDUSTRIAL &
TECHNOLOGICAL
DEVLOPMENT.
2. MANUFACTURING OF
DRUGS,ANTIBIOTICS,DYE
S,AGROCHEMICALS.
3. EXESSIVE USE OF
FERTILIZERS &
PESTICIDES FOR
AGRICULTURE.
4. DEVLOPMENT OF ATOMIC
& NUCLEAR ENERGY
WHICH RELEASE TOXIC
RADIOACTIVE MATERIALS
INTO ENV.
5. RELEASE OF TOXIC
GASES,CHEMICALS BY
PRODUCT FROM
CEMENT,SUGAR,DISTILLE
RY,DRUGS,PAPER,THERM
RESPONSIBLE INGREDIENTS FOR POLLUTION
5. ATMOSPHERE ARE SPRADE FROM EARTH SURFACE TO
UPTO 500 KM .
APPROX.MASS OF ATMOSPHERE IS 4.5 TO 5 X 10 15.
ATMOSPHERIC POLLUTION
REGION HEIGHT IN
KM
TEMP OF
REGION
MAIN
CONSTITUE
NTS
TROPOSPHERE 0—11 15 TO -56 O2 , N2 , CO2
, H2O
STRATOSPHER
E
11—50 -56 TO -2 O3
MESOSPHERE 50—90 -2 TO -92 O2+ , NO+
THERMOSPHE
RE
90—500 -92 TO -1200 O2+ , O+ ,
NO+
6. Green house effect
:-
The heating earth
up of the earth
surface by co2
layer in the
atmosphere is
called green house
effect
GLOBAL WARMING & GREEN HOUSE EFFECT
8. SOME MAJOR GREEN HOUSE GASES & THEIR SOURCES
GAS SOURCES
CARBON DIOXIDE (CO2) Fossil fuel combustion (coal,oil,natural gas)
Deforestation & land use changes
METHANE (CH4) Enteric fermentation in cattle & insects
Biomass burning & garbage land fills
Leakage of gases from coal mines & natural
gas
Rice paddies
Swamps & tundra
CHLORO FLUORO CARBON (CFC) Plastic foams
Refrigeration & air-conditioning
Aerosols(spray propellants)
Industrial solvents
NITROUS OXIDE (N2O) Fertilizers use
Fossile fuel combustion
Biomass burning
Changing land use
