Which of the following is true about a molecule which contains three polar bonds each of which have the same degree of polarity?
A) The molecule will always be polar.
B) The molecule will never be polar.
C) The molecule will be polar if the electron distribution is tetrahedral.
D) None of the above is true.
C
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Humans affect mountain biomes by
a. plowing and conversion of pristine land to cropland b. depletion of groundwater c. increased air pollution from urban areas d. hydroelectric dams and reservoirs e. establishment of tree plantations
Suppose a weather forecast states the following: Increasing high cloudiness and cold this morning; clouds increasing and lowering this afternoon, with a chance of snow or rain tonight; precipitation ending tomorrow morning; turning much warmer; winds light and easterly today, becoming southeasterly tonight and southwesterly tomorrow. Which of the following types of weather fronts would be responsible for this forecast?
A. cold front B. stationary front C. warm-type occluded front D. warm front
Why is geology such a useful tool in our ever-changing society?
What will be an ideal response?
In the last 8,000 years, humans have reduced the earth's original forest cover by about 23%.
Answer the following statement true (T) or false (F)