1. Environmental Science

2. Environmental Scientists – study how the natural world works and how humans and the environment affect each other. Environment –includes all the living and nonliving things with which organisms interact.

3. Discussion question: Explain how the way humans affect the environment differs from how other species affect the environment.

4. Natural Resources: Renewable – sun, wind, wave energy, geothermal energy Nonrenewable – oil, coal, natural gas, minerals

5. Sustainable resource – can continue at same rate of use into the foreseeable future Examples: fresh water, timber, soil, crops The current water shortage in California is due to overuse of fresh water, low snowfall, low snowmelt, and low rainfall.

6. Human Population Growth 1.Agricultural Revolution – 10,000 years ago, increased food supply, people lived longer 2. Industrial Revolution – machinery used fossil fuels (coal, oil, gas) » Increased food supply » Improved sanitation » Improved health care

7. Video Discussion questions: YouTube video: 7 billion How did we get so big so fast 1.At what number will we level off? 2.What 3 things does our survival depend on?

8. Ecological footprint: The environmental effects of an individual or population in terms of the total amount of land and water required to: 1.Provide the raw materials they consume 2. Dispose of the waste they produce

9. Discussion questions: According to the map on page 10: 1. Which 5 nations have the largest ecological footprint? US, Spain, UK, Italy, Japan 2. How does the wealth of a nation relate to its ecological footprint?