Mankind

•Manmade global warming

•Pollution•Soil

degradation (erosion,

runoff, etc.)•Nuclear warfare

Nature

•Mega tsunami and flooding

•Large earthquake•Hurricanes

•Drought•Super volcano

and climate change

10

0

http://library.thinkquest.org/CR0215471/global_warming.htm

10

0

•Unzen Volcano

•Krakatoa explosion

•Indian Ocean

Notable Incidents

http://www.tsunami.noaa.gov/

10

0•Overgrazing.•Overfarming without crop

rotating.

CausesCauses land to become unfertile.

Was responsible

for the American Dust Bowl.

http://www.globalchange.umich.edu/globalchange2/current/lectures/land_deg/land_deg.html

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0

•Shaanxi-

•Indian Ocean-

Could possibly trigger a volanco.

http://earthquake.usgs.gov/

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0

•Love canal•Radiation

Contamination

•Smog•Acid Rain

http://edtech.kennesaw.edu/web/pollute.html

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0

•Bhola cyclone•Indian cyclone

http://www.nhc.noaa.gov/

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0

•Sahel drought•Sometimes caused by

overgrazing

"Drought for kids." www.drought.unl.edu. University of Nebraska Lincoln. 26 Jan 2009

<http://drought.unl.edu/kids/>.

10

0•Hiroshima and

Nagasaki•Stockpiles

•Tsar Bomba

http://www.howstuffworks.com/nuclear-bomb.htm

10

0

•Krakatoa•Tambora

•Huaynaputina•The Year without a summer•Volcanic

winter•Lake Toba

•"Global Warming." www.thinkquest.org. Thinkquest. 18 Jan 2009 <http://library.thinkquest.org/CR0215471/global_warming.htm>.

•"Tsunami." www.tsunami.noaa.gov. National Oceanic and Atmospheric Administration. 18 Jan 2009 <http://www.tsunami.noaa.gov/>.

•"Land Degredation." www.umich.edu. University of Michigan. 18 Jan 2009 <http://www.globalchange.umich.edu/globalchange2/current/lectures/land_deg/

land_deg.html>.•"USGS Home." www.earthquake.usgs.gov. United States Geological Survey. 18 Jan 2009

<http://earthquake.usgs.gov/>.Jerrie S., Cheek. "Pollution." www.edtech.kennesaw.edu. 8 August 2005. Educational

Technology Center. 26 Jan 2009 <http://edtech.kennesaw.edu/web/pollute.html>."Drought for kids." www.drought.unl.edu. University of Nebraska Lincoln. 26 Jan 2009

<http://drought.unl.edu/kids/>.