An unconformity is a buried ________
A) surface of erosion with older strata above and younger strata below
B) fault or fracture with younger strata above and older strata below
C) surface of erosion separating younger strata above from older strata below
D) fault or fracture with older rocks above and younger rocks below
C
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In a biomagnification situation, assume that a dangerous chemical, called "X"is present in the water of a small bay at a concentration of .00005 parts per million (ppm)
Also assume there are three layers of consumption between the water and a certain predatory bird that lives around the lake, and at each step of consumption, chemical X gets magnified 1000 times. What is the final concentration of chemical X in the predatory bird after eating 100 fish in a week? a. At the end of one week, the bird will have 50 ppm of chemical X b. At the end of one week, the bird will have 5 ppm of chemical X c. At the end of one week, the bird will have 100 ppm of chemical X d. At the end of one week, the bird will have 1,000 atoms of chemical X e. At the end of one week, the bird will have 10 ppm of chemical X
How could higher gasoline taxes be justified, considering the principles of sustainability?
What will be an ideal response?
Which statement about higher gasoline taxes is true?
A. They failed to result in increased use of mass transit and car sharing in Europe. B. They have successfully reduced single occupancy vehicle use in the United States. C. They are generally supported by the transportation and fuel industries. D. They are more acceptable when fast, efficient, reliable, and affordable mass-transit options, bike lanes, and sidewalks are available. E. They are generally more accepted by dispersed populations than more concentrated populations.
Motion at a transform plate boundary is ________.
A. oblique B. horizontal C. vertical