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Global Warming

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Outline
1 The Natural Causes
2 The Man-made Causes
Global
ti
Warming
3 The Effects
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The Nature Causes
 Sun spots
 Water vapor
 Climate Cycle
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Sunspots
The sunspots will have an intense influence on magnetic activity.
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Water
Water vapor: the gas shape of water, which play an important
role in global warming.Water vapor absorbs and emits the
radiation to the atmosphere, thereby increasing the
temperature.(Dr.S.Fred.2001)
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Climate Cycle
The regular climate change cycles, which occur over a
period of approximately 40,000 years.Nowadays, the earth
turn to the warming cycle naturally(National Graphic).
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The Man-Made Causes
 Fossil fuels
 Methane
 Deforestation
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Fossil fuels
Excessive
Development and
Usage of Fossil uels
for a Long Term
The Chart of
Global Fossil
Carbon Emissions
from 1800 to 2000.

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Carbon Dioxide
A Greenhouse Gas
which producted by
buring fossil fuels.
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Methane
Methane is mainly
emitted by industry.
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Deforestation
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The Reasons
Nature
ti
Cause
Human
ti
Cause
Much of the temperature
change is down to
human influence
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The Effects
 Temperature increasing
 Glaciers melting
 Animal migration
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Temperature
 Global Annual Average Temperature Run Chart
Nearly 100 years
the average
High Expected value global temperature
has increased.
(0.6~0.9℃)
In the future,
Low Expected value the earth will
become much
hotter.
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Glaciers melting
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Animal Migration
 The change of living environment will lead to
the animal migration
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Summary
In conclusion, Global warming is caused by the combination
between natural and human activities. The natural reason
contains the sun spots exploding, Water vapor, and Climate
cycles. And the Burning fossil fuels, Methane and Deforestation
can be considered as the man-made reason. All of the factors
are contributed to the effect of temperature increasing, sea level
rise and the animal migration, which will have an negative on the
development of human.

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Reference
http://voices.yahoo.com/the-natural-causes-global-warming-
427295.html?cat=7
http://oilprice.com/The-Environment/Global-Warming/What-Are-The-
Causes-Of-Global-Warming.html
http://environment.nationalgeographic.com/environment/global-
warming/gw-effects/
http://www.guardian.co.uk/environment/2010/jan/29/water-vapour-
climate-change
http://www.sciencedaily.com/releases/2009/05/090502092019.htm
http://globalwarming.ygoy.com/2009/06/23/methane-
%E2%80%93global-warming-effects/
http://www.ehow.com/list_7639029_manmade-causes-global-
warming.html

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