11. Which of the following is a nonrenewable resource? (Points: 3)
wind power
geothermal energy
oil
solar energy

12. Which mineral is used in making cans and is found mainly in Australia? (Points: 3)
hematite
bauxite
magnetite
tektite

13. Smelting is the major method used to refine and enrich which of the following? (Points: 3)
uranium ore
oil
coal
iron ore

14. Which of the following is an example of sustainable use of natural resources? (Points: 3)
continuously strip mining coal deposits in an area
clear-cutting a forest
harvesting huge populations of fish from a fishing shoal
planting multiple crops together on a field and harvesting them at different times