Which type of sediment is most abundant in neritic deposits?
A) terrigenous sediments
B) biogenous sediments
C) hydrogenous (or authigenic) sediments
D) cosmogenous sediments
A
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Along divergent plate boundaries, magma formation takes place typically due to:
a) melting of the plates as they move apart as a result of frictional heating b) increased pressure from plate movement c) pressure being reduced (decompression melting) as the plates move apart d) water being released under pressure which lowers the melting temperature of the overlying asthenosphere e) hot spots, which always occur along divergent boundaries
A typical so-called "________" requires a factory to maintain an "open shop" and prohibits a "closed shop."
A) right-to-work law B) auto-industry law C) generous-work industry D) poor 'Southern-law' state E) progressive law
The time of day when the relative humidity reaches a maximum value is usually?
a. ?at the time when the air temperature is highest. b. ?in the middle of the afternoon. c. ?at the time when the air temperature is lowest. d. ?just before sunrise. e. ?about midnight.
What is the main energy source for the hydrologic cycle?
a. evaporative cooling b. greenhouse effect c. gravity d. solar energy e. natural gas