As two oceanic plates diverge at mid-ocean ridges, melting of the rising mantle occurs due to
A. decompression.
B. the addition of water.
C. the addition of heat.
Answer: A
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Eight of the 11 species of large, hunted whales are considered to be commercially extinct
a. True b. False
Compared to surrounding rural areas, night-time temperatures in urban areas are ________
Fill in the blank(s) with the appropriate word(s).
A(n) _____ is a linear or arcuate deformation belt in which many of the rocks have been metamorphosed by intruded magma
A)orogen B)craton C)greenstone belt D)supercontinent E)midcontinent rift
Solid-waste disposal prior to 1960 was mostly about the
A) sanitary treatment of sewage from cities and towns. B) safe storage of radioactive wastes. C) removal of topsoil contaminated by chemical spills. D) disposal of household and commercial garbage.