This is the first observable step in the development of a supercell tornado:
A) increased wind speed.
B) formation of a wall cloud.
C) slow horizontal rotation of a large part of the cloud.
D) formation of a funnel.
Answer: C
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A location distinguished by specific physical and cultural characteristics is a
A) place. B) space. C) site. D) situation. E) culture.
In Stage Two of demographic transition, birth rates are high and death rates are declining
Indicate whether the statement is true or false.
What was the experimental variable in the experiment?
A) Pesticide Z B) The number of grasshoppers receiving the pesticide C) The location of the fields D) The water sprayed on the fields
An amount of precipitation measured to be less than one-hundredth of an inch (0.25 mm) is called?
a. ?a trace. b. ?drizzle. c. ?light rain. d. ?mist. e. ?fog.