Which has the greater environmental destructive potential, Mankind or Nature?

1
Which has the greater environmental destructive
potential, Mankind or Nature?
2
The Risks
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
3
Manmade Global Warming(Mankind)
10
Is caused by release of greenhouse gases.
Raises water levels, kills algae, and decreases
oxygen.
0
More heat Less plants Less plants Less
animals Less animals Less food Less food Less
people
Measures are being made to regulate emissions
however .
4
Mega Tsunami(Nature)
10
Caused by
Notable Incidents
0

• Unzen Volcano
• Krakatoa explosion
• Indian Ocean

An undersea disturbance, such as an earthquake or
volcano.
5
Soil Degradation(Mankind)
10
Causes
Causes land to become unfertile.

• Overgrazing.
• Overfarming without crop rotating.

0
Was responsible for the American Dust Bowl.
http//www.globalchange.umich.edu/globalchange2/cu
rrent/lectures/land_deg/land_deg.html
6
Earthquakes(Nature)
10
Dangers
0
Could possibly trigger a volanco.
Notable Incidents

• Shaanxi-
• Indian Ocean-

http//earthquake.usgs.gov/
7
Pollution(Mankind)
10

• Love canal
• Radiation Contamination
• Smog
• Acid Rain

0
http//edtech.kennesaw.edu/web/pollute.html
8
Hurricanes(Nature)
10

• Bhola cyclone
• Indian cyclone

0
http//www.nhc.noaa.gov/
9
Drought(Nature)
10

• Sahel drought
• Sometimes caused by overgrazing

"Drought for kids." www.drought.unl.edu.
University of Nebraska Lincoln. 26 Jan 2009
lthttp//drought.unl.edu/kids/gt.
0
10
Nuclear Bomb(Mankind)
10

• Hiroshima and Nagasaki
• Stockpiles
• Tsar Bomba

0
http//www.howstuffworks.com/nuclear-bomb.htm
11
Super Volcano(Nature)
10

• Krakatoa
• Tambora
• Huaynaputina
• The Year without a summer
• Volcanic winter
• Lake Toba

0
12
Conclusion
Mankind
13
Credits

• "Global Warming." www.thinkquest.org. Thinkquest.
  18 Jan 2009 lthttp//library.thinkquest.org/CR02154
  71/global_warming.htmgt.
• "Tsunami." www.tsunami.noaa.gov. National Oceanic
  and Atmospheric Administration. 18 Jan 2009
  lthttp//www.tsunami.noaa.gov/gt.
• "Land Degredation." www.umich.edu. University of
  Michigan. 18 Jan 2009 lthttp//www.globalchange.umi
  ch.edu/globalchange2/current/lectures/land_deg/lan
  d_deg.htmlgt.
• "USGS Home." www.earthquake.usgs.gov. United
  States Geological Survey. 18 Jan 2009
  lthttp//earthquake.usgs.gov/gt.
• Jerrie S., Cheek. "Pollution." www.edtech.kennesaw
  .edu. 8 August 2005. Educational Technology
  Center. 26 Jan 2009 lthttp//edtech.kennesaw.edu/we
  b/pollute.htmlgt.
• "Drought for kids." www.drought.unl.edu.
  University of Nebraska Lincoln. 26 Jan 2009
  lthttp//drought.unl.edu/kids/gt.