Limestone consists of rock made from ____
a. ?carbon dioxide
b. ?carbonic acid
c. ?sodium bicarbonate
d. ?calcium carbonate
e. ?carbon silicate
ANSWER: d
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Which of the following is not a component of the Darwin-Wallace theory of natural selection?
a. All populations contain heritable variations. b. Some variations are more favorable than others. c. Not all young survive to maturity. d. All organisms can knowingly select their genetic direction. e. The parts of organisms are fully evolved and functional at any one time.
The Younger Dryas period
A) occurred nearly 100,000 years ago. B) lasted only a couple of decades. C) was quite warm in the Northern Hemisphere. D) had nothing to do with oceans. E) was likely caused by melting ice sheets.
The wave-like or meandering pattern of the upper level winds in middle latitudes is of major importance for:
A) transporting heat between equator and poles. B) causing westerly winds. C) causing jet streams. D) reducing wind speeds in the tropics. E) reducing the Coriolis effect.
In front of an easterly wave there is ________ and behind it there is ________
A) a hurricane, a midlatitude cyclone B) the jet stream, the trade winds C) surface westerlies, surface easterlies D) divergence, convergence E) thunderstorms, fair weather