A) counterclockwise
B) clockwise
C) north to south
D) from the equator to the poles
E) from the poles to the tropics
Correct Answer
verified
Multiple Choice
A) the cooling due to rainfall on windward side of a mountain
B) the cooling due to polar air masses flowing towards the equator
C) cooling due to the decrease in air pressure at higher elevations
D) the cooling due to increased cloud cover at higher elevations
Correct Answer
verified
Multiple Choice
A) areas that never drop below freezing.
B) the 20 Celsius isotherm.
C) the presence of pollinating insects.
D) areas that do not go below 4.5 Celsius.
E) the frequency of low-intensity fires.
Correct Answer
verified
Multiple Choice
A) gamma radiation
B) ultraviolet radiation
C) near-ultraviolet radiation
D) x-rays
E) long-wave infrared radiation
Correct Answer
verified
Multiple Choice
A) between 20 and 30 latitude
B) between 0 and 15 latitude
C) between 45 and 55 latitude
D) between 60 and 100 latitude
Correct Answer
verified
Multiple Choice
A) Calcium
B) Nitrogen
C) Oxygen
D) Ammonia
Correct Answer
verified
Multiple Choice
A) a tree species with bird dispersed seeds
B) a salamander that inhabits high elevations
C) an insect that can feed upon many different plant species
D) a fish species that depends on coral reefs for food and shelter
E) a bird that lives north of the Arctic Circle
Correct Answer
verified
Multiple Choice
A) the cooling of the land.
B) rising masses of warm air and sinking masses of cool air.
C) the greenhouse effect.
D) global differentials in sea surface temperature.
E) winds blowing off of the world's major mountain chains.
Correct Answer
verified
Multiple Choice
A) the selective uptake of water by plants.
B) the activities of grazing animals.
C) the precipitation of salt from dry air.
D) the secretion of salt by plants.
E) the settlement and evaporation of water.
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) In the Northern and Southern hemispheres,equal latitudes receive the sun's rays at equal angles year round.
B) The Northern hemisphere has a lower intensity of solar radiation than the Southern hemisphere because it is tilted away from the Sun year round.
C) The sun's rays strike the Northern hemisphere more obliquely during its summer months and less obliquely during its winter months.
D) The Northern hemisphere has a higher intensity of solar radiation than the Southern hemisphere because it is tilted toward the Sun year rounD.
E) The sun's rays strike the Northern hemisphere more obliquely during its winter months and less obliquely during its summer months.
Correct Answer
verified
Multiple Choice
A) They migrate to areas with lower water temperatures.
B) They slow down their shell-building processes.
C) They expel their symbiotic algae.
D) They reproduce in large numbers.
E) They produce more pigment.
Correct Answer
verified
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