A population's doubling time
A. is the length of time required for that population to double in size.
B. will be fifty years if the population grows at 2 percent per year.
C. increases as life expectancy increases.
D. All of the choices are correct.
Answer: A
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The North Atlantic Free Trade Agreement (NAFTA), which became effective in 1994, eliminated most barriers to moving goods between Mexico and the United States
Indicate whether the statement is true or false.
A ________ of sea-level causes a lowering of base-level and ________ in the lower part of a stream valley that terminates in the ocean
A) rising, incision B) rising, sedimentation C) lowering, sedimentation D) lowering, incision
Internalizing external costs
A. involves making the market price approach the true cost of an economic good. B. fails to include the cost of pollution. C. omits the costs of taxes. D. increases the chance for environmental degradation. E. lowers the cost of goods and services.
The fly ash waste produced by the electric power plant in the industrial ecosystem in Kalundborg, Denmark is used by
A. greenhouses. B. pharmaceutical plants. C. cement manufacturers. D. fish farms. E. area homes.