1. Types of Environmental Issues

2. 1. Population Growth
In the year 1800 there were ~1 billion people on Earth. In 1990 there were ~5.2 billion, and by 2100 there may be ~14 billion
Will our planet be able to support 14 billion people? (What is the carrying capacity of Earth?)

3. 2. Resource Use
Natural Resource – anything in the environment that is used by people
We divide natural resources into two categories:
Renewable
Non-Renewable

4. 2. Resource Use Continued
Renewable Resources – Always available, or naturally replaced.

5. Renewable Energy Resources
Wind
Water – also called hydroelectric power
Solar
Geothermal – heat energy from the Earth’s interior
Biomass – energy from burning organic or living matter

6. 2. Resource Use Continued
Nonrenewable Resources – these are not easily / quickly replaced as they are used.
Ex: fossil fuels take millions of years to replace

7. Nonrenewable Energy Resources
Oil (Petroleum) Fossil fuel
Coal Fossil fuel
Natural Gas Fossil fuel
Nuclear Energy – Uses radioactive Uranium to create energy
Fossil Fuels consist of hydrocarbons (Hydrogen and Carbon)

8. How is Coal Made…

9. How Oil and Gas are Made…

10. Natural causes of pollution: dust storms, volcanoes, wildfires
The contamination of Earth’s land, water or air
Coral Reef Destruction
Deforestation
Air Pollution
Natural causes of pollution: dust storms, volcanoes, wildfires

11. Brain Pop!