How would a chemical sedimentary rock form?
A) from the precipitation of minerals
B) particles of preexisting rocks liberate by physical weathering, then cement together
C) a metamorphic rock breaks down
D) a sedimentary rock is intensely heated
Answer: A
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The process where governments prescribe the use to which parcels of land may be put is ________
Fill in the blank(s) with the appropriate word(s).
The Columbia River volcanic field can be described as ____
a. andesitic stratovolcanoes b. voluminous basalt lava flows c. voluminous rhyolite tuff eruptions d. granite batholiths e. layered mafic intrusions
Commercial agricultural systems in the core are especially efficient in terms of food production per unit of
A) area.
B) labor.
C) fuel energy.
D) water.
E) both area and labor.
Without greenhouse gases, earth's temperature would be
A. 0°C. B. 15°C. C. 68°C. D. -18°C.