Why is the air over an open flame always moist?
A. One of the products of combustion is water vapor.
B. The hot flame vaporizes the water in the air above the flame.
C. Warm air contains more humidity than cold air.
D. None of the above is true.
Answer: A
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Which of the following was NOT true of early settlements?
A) They contained society's schools, museums, libraries and archives. B) They housed women and children while the men searched for food. C) They protected the group's land claims and food sources. D) They were often surrounded by defensive walls.
Describe the hierarchical structure of data sets stored in a geodatabase.
What will be an ideal response?
Basal slip becomes a more important means of glacier movement in warmer months when more
meltwater collects at a glacier's base. Indicate whether the statement is true or false.
On the continent of Africa, the great number of languages results from
A) transfer of Indo-European languages by missionaries. B) colonial influence. C) at least 5,000 years of minimal interaction among the thousands of culture groups. D) migration patterns from Asia and the Western Hemisphere. E) migration patterns by early Europeans.