Uplifted blocks are called:a
tensional blocks.
b. grabens.
c. horsts.
d. fault blocks.
e. graves
C
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Most biological productivity in the ocean occurs in the aphotic zone
a. True b. False
A stable salt marsh community disrupted by a sudden decrease in salinity that kills a particular species of sea grass is
reestablished by a new species of sea grass that is more tolerant to changes in salinity is experiencing the process of ___________ Fill in the blank(s) with the appropriate word(s).
Jet streaks are thought to have little to do with the development of severe thunderstorms
a. true b. false
Current ethanol production as a fuel does not significantly reduce greenhouse gas emissions because
A) of the amount of fossil fuels required to produce the corn used in the process. B) the process of fermentation produces a tremendous amount of carbon dioxide. C) the process of fermentation produces a tremendous amount of methane. D) burning ethanol or gasoline contributes the same net amount of carbon dioxide in the atmosphere.