Deserts caused by global patterns of air
circulation are dry because
a. as the moist air above deserts rise, all of the
water evaporates
b. dry, descending air above deserts draws
moisture from the soil
c. the moist air above deserts is absorbed by
the sandy desert soils
d. because of the warm temperatures, all the
moisture in the deserts is drawn away and is
transported by air currents to the tropics
e. all of the air currents above deserts have no
contact with bodies of water
B
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Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Bacteria?
a. A b. B c. C d. D e. E
Which example shows nonevolutionary change in a population?
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Polyarthritis in pigs, sheep, and turkeys may be associated with infection of which of the following bacteria?
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