1. Resources, Food, and Population
Dr. Charles Ophardt
EDU 370

2. Minerals
A mineral deposit is a volume of rock enriched in one or more materials
Minerals that do not require further processing - For example - gemstones, sand, gravel, and salt (halite).

3. Origin of Mineral Deposits
Hydrothermal Mineral Deposits
Magmatic Mineral Deposits Pegmatites
Sedimentary Mineral Deposits Evaporites
Placer Mineral Deposits - water - gold
Residual Mineral Deposits - erosion - Bauxite

4. Processed Minerals Iron at one time 40% hemitite ores used
Aluminum Aluminum is the third most abundant mineral in the Earth's crust - (NaAlSi3O8, KalSi3O8), but mined as bauxite
Copper 3% to less than 1%

5. Science & Technology
Case Study Example of how to bring science and technology into a series of lessons. Should more public lands be opened for mining?
Make a project for groups
Assign roles
Give or help find background materials

6. Energy Resources
Fossil Fuels Oil Natural gas Coal Oil Shale and Tar Sands
Combustion reaction Fuel(CxHy) + O2 --> CO2 + H2O + Energy
Earth at Night

7. Land
The availability of arable land at world level is less than 0.27 ha per capita,
Deforestation
Biodiversity. The replacement of natural ecosystems, especially tropical forests, for agricultural purposes results in a loss of biodiversity.

8. Land (II)
The food supply worldwide is increasingly dependent on stocks of fossil energy, in the form of fertilizers, pesticides, irrigation and machinery. I.e. technology

9. Water Water supply. Irrigation
Worldwide about 69% of the fresh water withdrawn is for the agricultural sector
Desertification - caused by over grazing, loss of cover vegetation

10. Food and Energy Energy - Food Chain Pyramid
Food Supply - Eat grain rather than Meat
Feeding the World

11. Food and Energy
TABLE 7 Equivalent feeding values of corn per kg animal product in the United States (USDA, 1990).
Animal product (1 kg) Corn feeding value (kg)
Milk
Egg
Broiler 2.4
Pig
Beef

12. References
Prof. Stephen A. Nelson Tulane University
FOOD, LAND, POPULATION and the U.S. ECONOMY by David Pimentel Cornell University and Mario Giampietro Isiituto Nazionale dell; Nutrizione, Rome