A high pitch is characteristic of
A. short-wavelength sound.
B. long-wavelength sound.
C. both about equally
D. none of the above
Answer: A
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The process of selecting individual plants and pairing them for reproduction to produce offspring with desirable characteristics is called ______________.
Fill in the blank(s) with the appropriate word(s).
Members of the Chemical Manufacturers Association pledge
A. responsible care by using only USP grade reagents. B. to manufacture utilizing responsible chemical standards. C. responsible care for all laboratory test animals. D. to manufacture without causing environmental damage.
________ carried out research to determine the impact of zebra mussels on fish communities
A) David Strayer B) Charles Darwin C) Native Americans D) S.W. Breckle E) Aldo Leopold
Which of the following is a poor choice when trying to reduce the likelihood of a slope failure?
A. adding a gabion and/or a resisting mass at the toe of a slope B. holding soil in place by using plants or netting C. using rock bolts to strengthen rock masses D. reshaping the topography by reducing the slope E. adding water to the slope during a cold snap to freeze it in place