2. What is Global
Warming?
*An increase in the
average temperature
of the Earth
*Recent debate, but
has been looked at by
scientists for centuries
3. What causes it?
* CO2
* Methane
* Nitrous oxide
* Fluorinated
compounds
Greenhouse Gases:
Human Impacts-
4. What causes it?
Natural Impacts:
*Volcanoes
*Water vapor
*clouds
*Change in sun’s
energy output
5. Who’s Responsible?
Burning of fossil
fuels is main cause
•U.S. is leader in
greenhouse gasses
•Human impacts are
changing the
composition of the
atmosphere
6. What are Causes of
Global Warming?
What is air pollution?
-The presence in the air of substances
which pose a potential threat to human
health and/or the environment.
-The presence of particles in the air
which decrease visibility
-The U.S. EPA estimates that 50 percent
of the U.S. population is exposed to air
pollutants exceeding current federal
standards.
7. Energy production from
fossil fuels
-Carbon dioxide, sulfur
oxides, particulates
-Increase in
greenhouse gases,
acidic precipitation
Air Pollution
12. Effects of Air Pollution and
Global Warming
-Rising Sea Level
-Change of precipitation and local climate
conditions; acid rain
-Alteration of forests and crop yields
-Expansions of deserts into existing
rangelands
-More intense rainstorms
-Not all long-term effects can be determined
13. What Is Being Done:
Alternatives
Renewable Energy Sources
Solar Energies
Wind Power
Biomass
Geothermal
15. Conclusion
Responsibility to improve
environmental conditions lies upon all
of us as individuals
Concentrate on preventing
environmental degradation before it
starts
Alternatives are feasible and Can be
Used