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11 Cards in this Set
- Front
- Back
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The Great Lakes alone contain at least______introduced species?
Give 1 example. |
139
Zebra Mussels |
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Life has existed on Earth for how many years?
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3.8 B.Y's
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Human kind has been present on Earth for how many years?
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800k years
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How old is the Earth?
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4.5 B.Y.O.
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What is a highly developed country? Give 3 examples. What pop. lives in these countries?
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The "haves".
USA, most of Europe and Japan. 20% of the population |
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Poor countries are broken down into what 2 categories?
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moderatly developed and less developed countries. (MDC'S/LDC'S)
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What pop. lives in the MDC'S/LDC'S?
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80%
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What is poverty?
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A condition in which people cant meet basic needs for food, clothing or shelter
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What is consumption?
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is the human use of materials and energy
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What is an ecological deficit?
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humans require more land than what is available.
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how many acres of productive land and water is available on earth?
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28.2 billion acres
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