1. AIM: How does pollution affect the environment?
What Are Some Types of Pollution You Know Of?

2. wastes from homes & factories animal wastes from farms
Water Pollution disposal of substances into water- lakes, rivers, oceans
Sewage
wastes from homes & factories
animal wastes from farms
fertilizers

3. Ex:Mercury is a toxin that
Toxic Wastes
Toxic (poisonous) wastes can cause environmental problems because when they are disposed of they can collect in the cells of organisms.
Ex:Mercury is a toxin that
can be found in fish

4. Biological Magnification
The concentration of toxic substances (DDT) as you move through the food chain (plants are eaten by herbivores, which are eaten by carnivores, etc…..) increases.

5. Thermal (Heat) Pollution
Some power plants & industries use water to cool their machines. The warmed water is then released into a river or lake. Why is this a problem?
The warm water cannot hold as much oxygen as cold water and some species may suffocate.

6. Solid Waste
A new increased demand for disposable products has led to solid waste problems.

7. How can we dispose of solid waste?
Recycle
Landfill
Incinerate (burn)

8. Air Pollution
The burning of fossil fuels that were formed from the remains of organisms millions of years ago contribute to air pollution.

9. Acid Rain Due to burning of fossil fuels
SO2 (sulfuric Acid), NO2 (Nitric Acid) in atmosphere
Rain mixes with gases in air
Destruction of trees and destruction of pond ecosystems
Acid Rain

10. certain pollutants react with sunlight.
Smog
results when
certain pollutants react with sunlight.

11. Global Warming What is Carbon Dioxide (CO2)?
A greenhouse gas that is produced from burning fossil fuels
It is also a product of cellular respiration (we breathe it out)

12. Greenhouse gases Gases that trap heat in the atmosphere
What are some other greenhouse gases?
CO2, methane, water vapor

13. Carbon Dioxide in the Atmosphere:
The amount of carbon dioxide in the atmosphere has been increasing.

14. How do we contribute to the increase of carbon dioxide in the atmosphere?
Burning of fossil fuels
Deforestation
breathing

15. Less trees = less photosynthesis = more CO2 and less O2
How does Deforestation cause an increase in atmospheric carbon dioxide?
Less trees = less photosynthesis = more CO2 and less O2

16. What does increased levels of carbon dioxide in the atmosphere cause?

17. This increase in earth’s temperature is called:
heat that would normally radiate back into space gets trapped.
This increase in earth’s temperature is called:
Global Warming

18. What are some of the detrimental effects of Global Warming?
Melting of the polar ice caps, leading to a rise in sea level and flooding in many coastal areas.

20. Ozone Layer:
Protects us from UV radiation

21. What are chlorofluorocarbons (CFC’s)?
Chemicals that destroy the ozone layer
Aerosol cans
Refrigerator Emissions
Air Conditioner Emissions

22. What is the problem with using CFC’s?
They create holes in the ozone layer around earth.
This will allow increased UV radiation to reach the Earth

23. How can UV radiation affect living things?
Mutations
Cancer

24. Global Warming vs. Ozone Layer Depletion
More UV
radiation
Caused
by air
pollution
Melting of
Ice caps
Mutations
CFCs
CO2