A conductor and an insulator are actually

A. one and the same.
B. opposites.
C. similar in some substances.
D. none of the above


Answer: B

Environmental & Atmospheric Sciences

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giving the animals a continuous series of grinding teeth:a. photosynthesis d. sublimation b. accretion e. molarization c. mitosis

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A tipping-bucket gauge makes use of a spring balance

Indicate whether the statement is true or false

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The figure above shows an upper-level 500 mb weather map drawn over North America. What are the lines on this map called?

a. geopotential height contours b. elevation contours c. isotherms d. isobars

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Poor people in developing countries often threaten wildlife preserves because

A. They enjoy sport hunting B. They dislike unsettled territory C. Vandalism is a popular use of spare time D. They need the resources to survive E. Their religion often emphasizes the action of dominating wildlife

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