A wind reported as 45° would be a wind blowing from the:
a. ?NE.
b. ?S.
c. ?SW.
d. ?NW.
e. ?E.
ANSWER: a
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Which of the following is the most efficient form of irrigation?
a. flood irrigation b. center-pivot irrigation c. low pressure irrigation d. precision sprinkler irrigation e. micro irrigation
The highest surface on this figure is a river terrace. This terrace
A) is older than the modern river channel.
B) formed sometime in the past.
C) predates erosion down to the present level.
D) All of these are correct.
Cities today offer more opportunities for employment than they did in the past
Indicate whether the statement is true or false.
Which of the following sets of numbers could be used to designate the principal energy levels (shells) in an atom?
A) -1, 0, 1, 2, 3 B) 0, 1, 2, 3, 4 C) 1, 2, 3, 4, 5 D) all of these