Nanotechnology and microtechnology are similar in that they both
A. have huge impacts on society.
B. are interdisciplinary.
C. are relatively new technologies.
D. all of the above
Answer: D
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Charge carriers in a metal are electrons rather than protons because electrons are
A. loosely bound. B. smaller. C. negative. D. all of the above
Which of the following describes worrying changes occurring in the environment worldwide?
A. Lowering sea levels and increased rainfall B. Increases in ice cover C. Increasing ocean alkalinity D. Increases in permafrost cover E. More intense droughts, and rivers that are running dry
A weakly foliated metamorphic rock composed of green minerals such as chlorite is classified as a(n)
A) amphibolite. B) greenslate. C) greenstone. D) green hornfels.
A region with long, very cold winters and average temperatures that exceed 50°F only one or two months during the summer has a(n) ____ climate
A) subpolar (Dfc) B) polar tundra (ET) C) polar ice cap (EF) D) alpine (An)