1. Warm-up
Metals
ission
Radioactive, heavy _________ are fuel for the process of Nuclear F__________.
What are 2 bad things about wind energy?
NOISY!
Land is Expensive!
Geothermal energy is clean, but it R_______ O_______ as it cools off.
uns ut

2. “Water, Air, & Land Resources”
Chapter 4, Section 3

3. Q: What do we use water for?
“Water Planet”
Earth = 71% water
Mostly salt water
We need fresh water to live
Q: What do we use water for?

4. Water Pollution Point Source Pollution: Nonpoint Source Pollution:
Specific point of origin
Nonpoint Source Pollution:
Does not have specific point of origin
Runoff:
Flows over the land surface instead of seeping into ground

5. Pollutants can… damage the body’s major organs and systems
cause birth defects
lead to infectious diseases
cause cancer
Fish concentrate the poisons in their flesh, making them dangerous to eat

6. Nah Dog! Atmosphere Blanket of air
nitrogen, oxygen, water vapor, and other gases
Chemical composition of atmosphere maintains life on Earth
Pollution changes chemical composition of atmosphere

7. Greenhouse Gases Global Warming – CO2, methane, and water vapor—
maintain a warm temperatures
Global Warming –
↑ Earth’s avg. tempo
↑ CO2 levels

8. Damage to Land Resources
Soil, forests, mineral & energy resources
Damage to Land Resources
Mining
500,000 mines in U.S.
Over-irrigation
Salty soil
Clear cutting trees
↑ Erosion