The number of volcanoes active today is about
A) 50.
B) 500.
C) 50,000.
D) 500,000.
Correct Answer:
Verified
Q39: Most of the heat of the earth's
Q40: Most mechanical weathering is the result of
A)
Q41: A wall of igneous rock that cuts
Q42: In their early stages, river valleys exhibit
Q43: On a worldwide basis, glaciers carve landscapes
A)
Q45: A body of porous rock through which
Q46: The most common volcanic rock is
A) pumice.
B)
Q47: Stalactites are found hanging from
A) the roofs
Q48: Most caves are due to
A) gas bubbles
Q49: Batholiths are not
A) very large plutons.
B) associated
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