The mantle can be separated into two different portions—the lower mantle and the upper mantle. The lower mantle is
A) completely solid due to extreme pressure that prevents rocks from melting.
B) composed of putty that flows like molasses.
C) rigid and cannot flow.
D) predominantly liquid.
A
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What do geologists call the subsurface reservoir consisting of permeable rock that can transmits water freely?
a. Confining layer b. Vadose zone c. Aquifer d. Aquitard
Evaporites consist of minerals precipitated from water.
a. true b. false
Interglacial periods are: a. very slow-moving periods
b. extended periods when glaciers covered the earth. c. warm periods between glacial advances. d. None of these choices.
The Holocene is not ________
A) an epoch in Earth history B) the present time in Earth history C) a part of the Pleistocene D) the part of Earth history that started 10,000 years ago E) before the Pleistocene in Earth history