The polymer Teflon contains what sorts of bonds?
A) C-C and C-H bonds
B) C-C and C-F bonds
C) C=C and C-F bonds
D) C=C and C-H bonds
B
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Which of the following is not generally correct regarding the basal layer of a glacier?
A) It can extend tens of meters above the ground surface. B) It tends to flow more slowly than the overlying parts of the glacier. C) It contains more debris than other parts of the glacier. D) Crevasses form in this region of the glacier.
Doppler radar
A) measures the sound waves emitted by thunderstorms. B) is used more extensively in Canada than in the United States. C) uses ultraviolet light. D) measures shifts in wavelengths of reflected electromagnetic radiation.
Which of the following reflects one of the current favored explanations of African poverty?
A) depopulation due to the slave trade B) tropical environments C) infertile soils D) HIV/AIDS epidemic E) lack of navigable rivers
Given what you know about convection, consider how global ocean circulation must work if the deep waters in the equatorial regions are known to be cold and surface waters are warm, but the latter cool when transported to cold polar regions
What will be an ideal response?