Global warming refers to rising global temperatures caused by increased greenhouse gas emissions from human activities like burning fossil fuels and deforestation. If actions are not taken to reduce greenhouse gases, scientists predict major environmental consequences including rising sea levels, more extreme weather, and species extinction and economic and health catastrophes. While taking action to address global warming would cost money, not acting could lead to even greater costs through damage from the impacts of climate change.

1. GLOBAL WARMING
By: Eduardo Zermeño

2. ABSTRACT
This presentation is about global warming, the causes
and the environmental consequences that scientists
predict for the future of the planet if this phenomenon
keeps on affecting the environment at the same rate it
has been affected specially since the industrial
revolution.
There are many scientists that are working on solutions
against global warming, but in this presentation we will
also examine the consequences that may come if
actions are or not taken against global warming.

3. OUTLINE
1. What is Global Warming?
2. Causes of global warming
2.1. Greenhouse effect:
3.Activities disturbing the Greenhouse effect:
4. Effects of global warming:
5. Consequences of taking or not taking action
against global warming

4. 1. What is global warming?
Global warming refers to a group of
alterations in the earth’s temperature
which can affect the climatic
parameters.

5. 2.
Causes
 Increase in the amount of greenhouse gasses in
the atmosphere attributed mainly to human
activity. Which has caused an unbalance in the
process called the green house effect.
 Since1900, the average temperature on the
planet has increased by 0.74 degrees Celsius

6. 3. Greenhouse effect
As human beingssurrounded byamountsincreasingof trees gas,remove CO2 has
The Thethe burningcut largesmall some is absorbed. The absorbedthe amount life
Sometogases help reflected and as part of oil, and keeping to lightmakes
Theseof the lightgases in thetemperaturecapacity earth.carbon dioxide, nitrous
Dueatmosphere of down surface of coal, their naturalprocesses warms
earth is from theforests are of methane,of trapped
the of blanket
The greenhouse is regulateamountswarmingthe naturalair which more heat
Trees remove wecontains occurs when sunlight passes through the
 CO2 air a large amounts of fossil fuels and pollute the
Thesurfaceothergases inresulting in an increase inradiates increased 30% this the
diminished, of theineffecttheto burn surface was notgreenhouse gases,into gases
greenhouse
oxide the as gases the heated earthknown the world surfaceby since
of sustainable continue atmosphere dramatically infrared temperature
withinand atmosphereintheatmosphere hasthen as surroundedlight this layer
thegreenhouse earth, planet. If
the
atmosphere heat through a house effect is occurring.
known as global warming. the earth
and it’s absorbed by greenhouse the green house effect.
strikes
planet an exaggerated green vital process called gases.
helpearth would be much too cold for human habitation.
1750. retain
to
atmosphere where

7. 4. Activities disturbing the greenhouse
effect
Burning fossil fuels
Deforestation
A growing world population

8. 4.1 Sources of emissions
 65% from burning fuel to create energy (excluding
transport)
 21% from transport
 9% from agriculture – for example, nitrous oxide
from chemical fertilizers or methane given off by
animals and manure.
 5% from industry – for example, manufacturing
goods

9. 5. Effects of global warming
 Changing sea levels and rising of temperatures.
 Extreme weather like floods, droughts and tropical
storms.
 Extinction of some species
 Impact in economy
 Lack of food and water
 Diseases
 Lost of rainforests

10. 6. Consequences of taking or not taking action against global
warming
Taking action
GLOBAL “NO”
“YES”
WARMING
COST $$$
FALSE +
GLOBAL
DEPRESION
COST $$$ CATASTROPHES
TRUE Economic
Political
Social
Environmental
Health
By Greg Craven

11. BIBLIOGRAPHY
 Information retrieved from

 “Climate Change”
 http://www.direct.gov.uk/en/Environmentandgreenerlivin
g/Thewiderenvironment/Climatechange/DG_072885
 April/22/2010.

 “The most terrifying video you’ll ever see”: By Greg
Craven
 www.youtube.com
 April/22/2010

 Additional information and pictures retrieved from:
 Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft
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