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10 Cards in this Set
- Front
- Back
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National economies of the early 21st Century Fall into three major types: |
1. Subsistence 2. Market 3. Planned (communist) |
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______ % of global land is unsuitable for agriculture |
70% |
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Today about 86% of U.S. workers are in _______ sector |
Service |
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in 1850, most U.S. workers were in the _________ (primary) sector |
Agricultural |
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In 1950, U.S. workers were in the _________ (secondary) sector |
Manufacturing |
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1800: only 3% of world's population lived in cities: now approximately ______of world's population lives in cities |
50% |
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in 2014, there were ______ megacities (cities over 10 million in population) |
33 |
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Is Chicago a megacity? |
No, but it is close (about 446,000 people away from 10 million population) |
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_______ (year) was the population peak for most large U.S. cities |
1950 |
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The current World Population is about ______ billion people |
7.1 billion |
