One study estimated that the United States has enough wind power potential to produce ____ times its current electricity needs.
A. 2-3
B. 5-10
C. 16-22
D. 36-42
E. 46-52
Answer: C
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Which of the following describes how a metal atom behaves in a bulk metallic object?
A. The metal atoms have limited interaction with neighboring atoms. B. The metal atom shares its electrons with only one other atom. C. The metal atom shares its electrons in a very directional manner. D. The metal ion shares its outermost electrons freely with its neighbors. E. none of the above
Ammonites of the Mesozoic were characterized by a/an
a. restricted duration in time. b. increasingly restricted marine environment with time. c. increasingly complex feeding mechanism with time. d. increasingly complex suture pattern with time. e. increasingly complex locomotor mechanism with time.
Lightning can strike
A) below a thunderstorm cloud. B) out of the anvil of a thunderstorm cloud. C) from the side of the cloud. D) all of these
any alteration in the structure of function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment
What will be an ideal response?