Global Warming

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Global Warming
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Humans Activites and Global Warming

• CO2 is a gas in the atmosphere. Sources of CO2
  are
• Respiration  
• Combustion, primarily from burning fossil fuels
•  
• CO2 is increasing in the atmosphere because
  of the burning of fossil fuels for energy,
  manufacturing, and transportation.
•  

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Global Warming and the Environment

• Global warming disrupts the carbon cycle. 
•  
• More carbon stays in the atmophere where it acts
  as a green house gas. 
•  
• Green house gases trap heat from the sun, causing
  the average temperature on Earth to increase. 

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Global Warming and the Environment

• NASA, http//www.nasa.gov/centers/langley/images/c
  ontent/174212main_rn_berrien2.jpg

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Global Warming and the Environment-Habitat
destruction -Extinctions-Human concerns
agriculture problems health issues water
availability rising sea water

• http//www.naturetrek.co.uk/blog/content/binary/po
  alr_bear1.jpg

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Scientific Evidence CO2 in the Atmosphere
NYTIMES.COM
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Earth Observatory, NASA  http//earthobservatory.
nasa.gov/Study/Paleoclimatology_IceCores/
Scientific Evidence Ice Cores
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Data measured by CSIRO Division of Atmospheric
Research from ice cores supplied by Australian
Antarctic Division
Scientific Evidence Ice Cores
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Climatic Research Unit, University of East
Anglia, UK
Scientific Evidence Temperature Records
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U.S. Environmental Protection Agency
http//www.epa.gov/climatechange/science/pastcc_fi
g1.html
Scientific EvidenceCO2 and Temperature
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What can humans do?

• Conserve energy
•  
• take public transportation or walk
•  
• use energy efficient appliances and light bulbs
•  
• turn off lights when not in use
•  
•  

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What can humans do?

• Lobby for alternative energy sources
• solar power
• wind power
•  
• Learn more
•  visit http//www.epa.gov/climatechange/
• take AP Environmental Science 
• join L.E.A.P.

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References

• United States Environmental Protection Agency
• www.epa.gov/climatechange/
• New York Times
• www.nytimes.com
• NASA, Earth Observatoryearthobservatory.nasa.gov/
  Study/Paleoclimatology_IceCores/
• Miller and Levine. Biology. p. 159

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• http//www.amnh.org/sciencebulletins/?sidh.s.geog
  raphy.20080908srch_nc