The total fertility rate is
A. the sum of the world's birth rates
B. the average number of children a woman will bear in her lifetime
C. the total population of women
D. the total value of all crops grown
B. the average number of children a woman will bear in her lifetime
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When a big fish swallows a small fish, the two-fish system after lunch has a momentum
A. the same as before. B. somewhat less. C. greater than before. D. none of the above
Which of the following is not a major controller of investment, production, and consumption of goods?
A. the United States B. Japan C. Western Europe D. China
Lingering in a long line at the dry cleaners, a woman starts to feel dizzy and tired with a quickly developing headache. Someone suggests that her symptoms might be from breathing something used in the shop
A substance that can cause such symptoms, and is commonly used in dry cleaning, is a A) heavy metal. B) halogenated hydrocarbon, PERC. C) radioactive hydrocarbon. D) safe and gentle natural compound.
Which of the following small molecules are converted to form sugar in photosynthesis?
A. oxygen and water B. carbon dioxide and oxygen C. water and carbon dioxide D. hydroxyl ion and hydrogen