The total fertility rate is the ____.
A. number of children born to a woman during her lifetime
B. number of children a couple must bear to replace themselves
C. average number of children born to women in their reproductive years
D. number of live births per 1,000 people
E. births and immigrations into a population
Answer: C
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An eagle standing on a rock lifts off in flight. As soon as it leaves the rock, support force by the rock
A. gradually diminishes. B. gradually increases. C. no longer acts. D. remains constant.
Does lowering the temperature in your home during the winter cause the relative humidity to increase or decrease? Why? What physiological effects might you experience during both humid and dry conditions?
What will be an ideal response?
Milankovitch cycles ________
A) are the cause of ice ages B) seem to be unrelated to ice ages C) correlate fairly well with some major ice advances D) are possible ice age causes related to changing positions of continents E) are based on the varying output of the sun
The erosional features shown in this image from Mars are thought to have been formed by
A. tectonics. B. glaciers. C. running water. D. wind.