In a mid-latitude cyclone, when the upper low lies directly above the surface low, the storm system is said to be?
a. ?horizontally stacked.
b. ?vertically unstable.
c. ?vertically stacked.
d. ?horizontally unstable.
e. ?vertically cut off.
ANSWER: c
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A species becomes extinct when
A. individuals of two different species try to mate. B. all individuals of a species are eliminated. C. habitat change causes organisms to leave an area. D. All of the statements are correct.
The largest problem with adopting the new technology of renewable resources is ________
A) in evaluating the scientific and economic impacts B) that long?term maintenance costs are much higher than those for fossil fuels C) that energy production facilities are not located near consumers D) that technological advances have not been made in the last 30 years to meet our energy needs E) that the startup costs may be high
Santa Ana winds warm by ____________________ as they flow down an elevated desert plateau
Fill in the blank with correct word.
While the figure may seem high (especially when compared to a century ago), as an indicator of well-being, __________ in the US is actually lower than in 49 other countries.
-religious affiliation -inter-regional migration -life expectancy -the total fertility rate -level of education