Archean and Proterozoic greenstone belts are similar except Archean greenstone belts have
significantly more ultramafic lava. Indicate whether the statement is true or false.
T
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Which of the following sites is most likely to be flooded if all other factors are held constant?
A. a site that is higher but closer to the river than a site that is lower but farther from the river B. a site on the floodplain instead of a site on an older terrace C. a site next to the river where the main channel is wider and deeper than other segments of the river D. All of these choices are correct.
A thermal inversion aggravates the effects of which of the following?
A. radon B. acid rain C. smog D. ozone hole
Which of the following features is created at a divergent plate boundary?
A) mountain building at the margin of the continent B) oceanic trench C) subduction zone D) continental crust E) rift valleys
Which horizon may accumulate minerals that are not present in the parent material?
A) A horizon B) O horizon C) E horizon D) B horizon