A good working definition of life does not need to incorporate that living things ________
A) are capable of reproduction
B) can adapt to their environment
C) can capture, store, and transmit energy
D) can change through time
E) contain carbon in their chemical makeup
E
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As the Baby Boom ages and the elderly cohorts get larger, the dependency ratio in the United States will
A) drop. B) rise. C) disappear. D) stay the same. E) fluctuate more and more.
Which of the following is the name for an abrupt change in wind speed or wind direction?
A. an air pocket B. squall C. wind shear D. flurry
Which of the following are the major factors that determine a population's growth rate?
A) birth rate, death rate, emigration, immigration B) survivorship, natural selection, mutation, extinction C) immigration, climate, emigration, biotic potential D) limiting factors, carrying capacity, mutation rate, inbreeding E) adaptation, competition, birth rate, emigration
After a major rainstorm in a humid climate and with no overland flow to a stream, why does the stream level rise almost immediately?
a. Groundwater seeps down to raise the water table and forces older groundwater out into the stream. b. The groundwater moves very fast, through porous ground, to the stream. c. The stream rise comes from farther up the drainage basin. d. Actually it doesn’t rise rapidly; it merely seems like it does. e. The groundwater displaces older groundwater in the stream, over the water table.