This document discusses global warming, its causes, and effects. Burning fossil fuels for energy, transportation, and industrial processes releases greenhouse gases like carbon dioxide into the atmosphere, trapping heat and causing average global temperatures to rise. Increasing temperatures lead to more extreme weather events and rising sea levels, threatening human health, food supplies, and coastal infrastructure. Reducing greenhouse gas emissions through renewable energy, energy conservation, and limits on industrial pollution can help control the problem.

1. GLOBAL
WARMING

2. GLOBAL WARMINGGLOBAL WARMING
•AN AveRAGe INcReAseAN AveRAGe INcReAse
IN the teMpeRAtuRe OfIN the teMpeRAtuRe Of
the AtMOspheRe NeARthe AtMOspheRe NeAR
the eARth’s suRfAcethe eARth’s suRfAce
ANd IN theANd IN the
tROpOspheRe, WhIchtROpOspheRe, WhIch
cAN cONtRIBute tOcAN cONtRIBute tO
chANGes IN GLOBALchANGes IN GLOBAL

3. cAusescAuses
• Burning of fossil fuelsBurning of fossil fuels ((Coal/Crude oil)Coal/Crude oil)
– pOWeR pLANtspOWeR pLANts GeNeRAte eLectRIcItyGeNeRAte eLectRIcIty
– tRANspORtAtION-----fueLs fOR tRANspORtstRANspORtAtION-----fueLs fOR tRANspORts
(e.G. LpG,(e.G. LpG,
keROseNe, fueL OIL)keROseNe, fueL OIL)
– INdustRIAL pROcesses (e.G. MANufActuReINdustRIAL pROcesses (e.G. MANufActuRe
OfOf
ceMeNt, steeL, ALuMINIuM)ceMeNt, steeL, ALuMINIuM)

4. • OtheR GReeNhOuse GAsesOtheR GReeNhOuse GAses
eMIssIONeMIssION
– AGRIcuLtuReAGRIcuLtuRe
– fORestRyfORestRy
– OtheR LANd usesOtheR LANd uses
– WAste MANAGeMeNtWAste MANAGeMeNt

5. GReeNhOuse GAses IN theGReeNhOuse GAses IN the
AtMOspheReAtMOspheRe
↓↓
sOMe INfRARed RAdIAtION Is tRAppedsOMe INfRARed RAdIAtION Is tRApped
↓↓
GReeNhOuse effectGReeNhOuse effect
Serious greenhouse effect
GLOBAL WARMINGGLOBAL WARMING

6. Increase InIncrease In
greenhouse gasesgreenhouse gases
• Concentration of greenhouseConcentration of greenhouse
gases in the atmosphere is highlygases in the atmosphere is highly
increasing by human activitiesincreasing by human activities
→→ Leads to the IncreasIngLeads to the IncreasIng
serIousness of gLobaL warmIngserIousness of gLobaL warmIng

8. IncreasIng temperatureIncreasIng temperature
extremesextremes
•regIons that have temperaturesregIons that have temperatures
(1-3°c) warmer than the average:(1-3°c) warmer than the average:
– unIted statesunIted states
– most of the europemost of the europe
•regIons that have temperaturesregIons that have temperatures
(1-3°c) cooLer than the average:(1-3°c) cooLer than the average:
– austraLIaaustraLIa

9. sea LeveL rIsIngsea LeveL rIsIng
•rIsIng at an average rate of 1rIsIng at an average rate of 1
- 2 mm/year over the past 100- 2 mm/year over the past 100
yearsyears

10. EnvironmentalEnvironmental
and Humanand Human
EffectsEffects

12. ExtrEmE EvEntsExtrEmE EvEnts
• Extreme Events:Extreme Events:
• Heat waves; Cold waves; Storms; Floods andHeat waves; Cold waves; Storms; Floods and
DroughtsDroughts
Global warmingGlobal warming
An increase in the frequency of extreme eventsAn increase in the frequency of extreme events
More event-related deaths, injuries, infectiousMore event-related deaths, injuries, infectious
diseases, and stress-related disordersdiseases, and stress-related disorders

13. Air QuAlityAir QuAlity
An incrEAsE in thEAn incrEAsE in thE
concEntrAtion of ground-concEntrAtion of ground-
lEvEl ozonElEvEl ozonE
dAmAgE lung tissuEdAmAgE lung tissuE
hArmful for thosE withhArmful for thosE with
AsthmA And othEr chronicAsthmA And othEr chronic
lung disEAsEslung disEAsEs

14. food supplyfood supply
Rising temperatures and variableRising temperatures and variable
precipitationprecipitation
Decrease the production of staple foodsDecrease the production of staple foods
in many of the poorest regionsin many of the poorest regions
Increasing risks of malnutritionIncreasing risks of malnutrition

15. uv ExposurEuv ExposurE
(AustrAliA)(AustrAliA)
• skin cAncErskin cAncEr
– an abnormal growth of skin tissues.an abnormal growth of skin tissues.
• prEmAturE AgingprEmAturE Aging
– make the skin thick, wrinkled, and leathery make the skin thick, wrinkled, and leathery

16. Measures on controllingMeasures on controlling
the probleMthe probleM
•governMentgovernMent
** set some laws to limit the amount ofset some laws to limit the amount of
pollutants produced by factoriespollutants produced by factories
* develop the skills of using renewable* develop the skills of using renewable
fuels, e.g. solar energy, wind energyfuels, e.g. solar energy, wind energy

17. ** encourage the factories to replaceencourage the factories to replace
fossil fuels by renewable fuels, whichfossil fuels by renewable fuels, which
would not cause environMentalwould not cause environMental
pollutionpollution
* carry out energy saving scheMe →* carry out energy saving scheMe →
reduce the pollution produced byreduce the pollution produced by
burning fossil fuelsburning fossil fuels
* build More plants to reduce the→* build More plants to reduce the→
pollutants e.g.= copollutants e.g.= co22

18. • citizenscitizens
** reduce the use of plastic bags →reduce the use of plastic bags →
as burning plastic eMit ch4as burning plastic eMit ch4
* recycle the resources, e.g.* recycle the resources, e.g.
plasticplastic
* reduce the use of sprays as→* reduce the use of sprays as→
cfcs would be eMitted outcfcs would be eMitted out

19. ** reduce the use of air-conditioner, whichreduce the use of air-conditioner, which
will eMit cfcswill eMit cfcs
* use public transportation instead of* use public transportation instead of
private cars reduce the pollutants→private cars reduce the pollutants→
eMitted by carseMitted by cars

20. the end
Made by-Made by-
bhuwan singhbhuwan singh
(b.tech 1(b.tech 1stst
year)year)
(brach-eee)(brach-eee)
(subject=evs)(subject=evs)