Date post: | 07-Apr-2018 |
Category: |
Documents |
Upload: | megha-agarwal |
View: | 227 times |
Download: | 0 times |
of 18
8/6/2019 Interdependence of Human and Envt
1/18
Ill effects of humanIll effects of humanactivities onactivities on
environmentenvironment
8/6/2019 Interdependence of Human and Envt
2/18
Population growthPopulation growth
IndustrializationIndustrialization Burning fuelsBurning fuels
NonNon--renewablerenewable
fossil resourcesfossil resources
Increased COIncreased CO22levelslevels
PollutionPollution
8/6/2019 Interdependence of Human and Envt
3/18
DeforestationDeforestation Population growthPopulation growth
leads to the loss ofleads to the loss of
natural habitatsnatural habitats
Cut down trees toCut down trees to
build new homesbuild new homes
Loss of biodiversityLoss of biodiversity
Loss of oxygenLoss of oxygenproducers and COproducers and CO22eliminatorseliminators
8/6/2019 Interdependence of Human and Envt
4/18
DDT and BIOACCUMULATIONDDT and BIOACCUMULATION
DDT can causeDDT can causecancercancerandis majorlyandis majorlyharmfulto wildlife,harmfulto wildlife,paricularlyparicularly birdsbirds
DDT maybedirectlyDDT maybedirectlygenotoxicgenotoxic,but may,but mayalsoinduceenzymesalsoinduceenzymesto produceotherto produceothergenotoxicgenotoxicintermediatesandintermediatesandDNAadductsDNAadducts
Accumulation ofAccumulation ofsuch pesticides insuch pesticides intop predators startedtop predators startedhaving lethal effects.having lethal effects.
It also endangeredIt also endangeredmany species ofmany species ofbirds, Including ourbirds, Including ourBald Eagles.Bald Eagles.
8/6/2019 Interdependence of Human and Envt
5/18
8/6/2019 Interdependence of Human and Envt
6/18
POLLUTIONPOLLUTION
Typesof PollutionTypesof Pollution
AirPollutionAirPollution
WaterPollutionWaterPollution
Soil PollutionSoil Pollution
8/6/2019 Interdependence of Human and Envt
7/18
AirpollutionAirpollution
8/6/2019 Interdependence of Human and Envt
8/18
1.1. CombustionCombustion ::--
Thetechniqueof combustionisused forThetechniqueof combustionisused forcontrolling air pollutioninthose cases wherethecontrolling air pollutioninthose cases wherethe
pollutantsareinthe form oforganic gasesorvapors.pollutantsareinthe form oforganic gasesorvapors.2.2. AbsorptionAbsorption ::--
Intheabsorption method,the pollutedairIntheabsorption method,the pollutedaircontaining gaseous pollutantsis passedthrough acontaining gaseous pollutantsis passedthrough a
scrubber (ortank) containing asuitableliquidscrubber (ortank) containing asuitableliquidabsorbent. Theliquidabsorbsthe harmful gaseousabsorbent. Theliquidabsorbsthe harmful gaseouspollutants presentinair.So,theaircoming outofpollutants presentinair.So,theaircoming outofscrubberis free from pollutantsanditsdischargedscrubberis free from pollutantsanditsdischargedintotheatmosphere.intotheatmosphere.
PreventionandControlOfAirPreventionandControlOfAir
PollutionPollution
8/6/2019 Interdependence of Human and Envt
9/18
WaterpollutionWaterpollution
8/6/2019 Interdependence of Human and Envt
10/18
Acidification of WaterAcidification of Water
BodiesBodiesDissolving CO2 in seawater increasesthe hydrogen ion concentration in the
ocean, and thus decreases ocean pH
Lakes and ponds can become so acidified
that no life can live in them!
8/6/2019 Interdependence of Human and Envt
11/18
1.Industrial wastesshouldbetreated chemicallyto1.Industrial wastesshouldbetreated chemicallytoneutraliseneutralise
the harmfulsubstances presentinthem,beforethe harmfulsubstances presentinthem,before
discharging intorivers.discharging intorivers.
2.Waste paper, plastics, waste food materialsandrotting2.Waste paper, plastics, waste food materialsandrottingfruitsand vegetablesshouldnotbethrownintoopenfruitsand vegetablesshouldnotbethrownintoopen
drains.drains.
3.Solid wasters containorganic matterandeffluents from3.Solid wasters containorganic matterandeffluents from
distilleriesshouldnotbethrowninto waterbodies. Thesedistilleriesshouldnotbethrowninto waterbodies. These
shouldbesenttobiogas plants.shouldbesenttobiogas plants.
4. Ifasourcesof water gets polluted with oil,then theoil4. Ifasourcesof water gets polluted with oil,then theoil
slick formedshouldbeskimmedof from itsasurfaceslick formedshouldbeskimmedof from itsasurface
with the help ofsuctiondevice.Saw dust canalsobewith the help ofsuctiondevice.Saw dust canalsobe
spreadoveroilslicktoabsorb as much oilas possible.spreadoveroilslicktoabsorb as much oilas possible.
PreventionandControlOfWaterPreventionandControlOfWater
PollutionPollution
8/6/2019 Interdependence of Human and Envt
12/18
The contaminationofsoil ( orland) with solid waste,The contaminationofsoil ( orland) with solid waste,
acidrain,excessof fertilizers,insecticidesandacidrain,excessof fertilizers,insecticidesand
herbicidesis calledsoil pollution ( orlandherbicidesis calledsoil pollution ( orland
pollution).pollution).
SourcesofSoil PollutionSourcesofSoil Pollution
1.1.Solid wastesSolid wastes
2.2. AcidrainAcidrain
8/6/2019 Interdependence of Human and Envt
13/18
Acid RainAcid Rain releases sulphatesreleases sulphates
Burning of fossilBurning of fossil
fuels and nitratesfuels and nitrates
into airinto air
Sulphates andSulphates and
nitrates mix withnitrates mix with
water vapor in airwater vapor in air
and form sulphuricand form sulphuric
acid and nitric acidacid and nitric acid
8/6/2019 Interdependence of Human and Envt
14/18
Preventionofsoil pollutionPreventionofsoil pollution
Clearing,terracing orlevelling oftheland;Clearing,terracing orlevelling oftheland;
Decontaminationof pollutedlandDecontaminationof pollutedland
LandrehabilitationafterindustrialorminingLandrehabilitationafterindustrialorminingusageusage
DrainageandirrigationsystemsDrainageandirrigationsystems
Combating desertificationCombating desertification
8/6/2019 Interdependence of Human and Envt
15/18
Global warming: CausesandGlobal warming: Causesand
effectseffects Burning fuelssuch as coil,Burning fuelssuch as coil,
oil productsetc producesoil productsetc produces
green house gasesingreen house gasesin
largeamountlargeamount Some predictionsoflocalSome predictionsoflocal
changesincludechangesinclude
increasingly hotsummersincreasingly hotsummers
andintensethunderstormsandintensethunderstorms
Damaging weatherDamaging weather
phenomena causeanphenomena causean
increaseineconomic andincreaseineconomic and
health problems.health problems.
8/6/2019 Interdependence of Human and Envt
16/18
8/6/2019 Interdependence of Human and Envt
17/18
Review
Population growthPopulation growth DeforestationDeforestation
DDT and BioaccumulationDDT and Bioaccumulation
OzonedepletionOzonedepletion Typesof pollutionTypesof pollution-- causesandcausesand
preventionprevention
AcidrainAcidrain Acidificationof waterbodiesAcidificationof waterbodies
Global warmingGlobal warming
8/6/2019 Interdependence of Human and Envt
18/18
PRESENTED BY:
SNEH
AH
OUSE
GUIDED BY: MRS.SUSHMACHUGH
CREATED BY:
ABHISHEKAGGARWAL
AAYUSHICHAUHAN