1. Environmental Effects of Overpopulation

3. Nonrenewable resources are limited.
Kern County, CA
Nonrenewable resources are limited.
Coal
Oil
Natural Gas
Fossil
fuels
Palm Springs, CA
Renewable resources are unlimited.
Wind
Solar
Water

4. Flaring natural gas

6. Why is the moon so much colder at night?
Nighttime = -150o C (-238o F)
Why is the moon so much colder at night?
Earth (Beverly Hills):
Nighttime = 5o C (40o F)

7. Earth Some heat escapes into space CO2 heat
Some heat naturally trapped by CO2 and other greenhouse gases
CO2
heat
The Natural Greenhouse Effect is good for life on Earth.
heat
heat
CO2
CO2
CO2
CO2
CO2
heat
CO2
CO2
CO2
Earth
CO2
CO2

8. CO2, Methane, other greenhouse gases
Earth

9. Earth More heat trapped near Earth’s surface
Less heat escapes into space
CO2
heat
CO2
heat
heat
heat
heat
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
heat
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
Excess CO2 in atmosphere
CO2
CO2
CO2
CO2
CO2
Earth
CO2
CO2
CO2
CO2

10. Global Climate ChangeEffect
Main Cause: CO2 released from burning of fossil fuels
Effects: Too much heat trapped near the earth’s surface may change climate patterns.
Solutions: Reduce use of fossil fuels and air pollution, plant trees, use alternative energy sources.

11. Acid Rain
Cause:
Air pollution from burning fossil fuels combines with rain water.
Effects:
Ecosystems more acidic
Kills plant and animal life
Solutions:
Reduce fossil fuel usage and air pollution.
Add buffer (base) to waterways
Crushed limestone is being added to this lake to raise the pH

12. Nitric acid
Sulfuric acid
SO2 NO NO

13. Ozone layer blocks UV radiation from the sun
Ozone Layer Depletion
Cause:
CFCs (air pollution) removes ozone.
More UV radiation reaches the surface
Effects:
Crop damage
Skin cancers
Eye damage
Solution:
Regulate CFCs in factory waste
plant trees. UV UV
Ozone layer blocks UV radiation from the sun
Ozone layer
CFCs

14. Smog Causes: Effects: Solutions:
Particulates rise into air and react with sunlight to make air pollution
Effects:
Poisonous to plant and animal life (respiratory illness).
Solutions:
Reduce use of fossil fuels
Plant trees

15. Deforestation Causes: Harvesting/destroying forests for: Wood demand
Creating farmland
Effects:
Species extinction
Less CO2 removed
Solutions:
Recycle!
Improved farming practices and technology.
This used to be part of the Amazon rainforest, but rain and wind blew away much of the topsoil…creating a desert-like area.
Amazon “jungle”

16. Invasive Species Zebra mussels Kudzu vines Kudzu vines Cause:
Foreign species introduced to new environment.
Effects:
Foreign species outcompete or prey on native species.
Economic damage
Solutions:
Laws preventing foreign plants and animals into new countries
Zebra mussels
Kudzu vines
Kudzu vines

18. Biomagnification Causes: Pollution in the environment. Effects:
Pollutants accumulate in fat of organisms
Pollutants move up the food chain
Solutions:
Reduce water pollution
More organic farming

20. Pollutants and their sources
Carbon dioxide: Burning oil, coal, natural gas for energy. Decay and burning of tropical forests.
Sulfur dioxide: Burning coal to generate electricity.
Hydrogen fluoride and silicon tetra fluoride: Aluminum and phosphate fertilizer production, oil refineries, and steel manufacturing.
Ozone: Chemical reactions of sunlight on automobile exhaust gases. Ozone is a major pollutant in smog.
Methane: Burning fossil fuels, livestock waste, landfills and rice production.
Nitrous oxides: Burning fossil fuels and automobile exhausts.
Chlorofluorocarbons: Air conditioners, refrigerators, industrial foam.