A world map shows high (dark blue) urban population in America, Australia, parts of the Middle East, Southeast Asia; moderate (blue) in parts of Africa, Asia, and Eastern Europe; low (light blue) in Central/South Asia, and Sub-Saharan Africa.
Class | Rank | Percent | Major Iron-Producing Areas in North America | Oil Shale or Tar Sands | Class | Rank | Years | Class | Rank | Percent | Value | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.52% | 11.5% | |||||||||||
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