The very large crystals of quartz, feldspar, and muscovite found in pegmatites form from ________
A) the final crystallizing parts of a magma B) the middle crystallizing parts of a magma
C) the early crystallizing parts of a magma D) all of the above
A
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Which of the following types of agriculture is most characteristic of developed countries?
a. plantation agriculture b. traditional agriculture c. industrialized agriculture d. minimum-tillage agriculture e. maximum-tillage agriculture
Wind most commonly picks up particles by
A) shear force. B) flow force. C) abrasion. D) plucking.
Thunderstorms are usually more severe along cold fronts than they are along warm fronts.
Answer the following statement true (T) or false (F)
Which of the following combinations make for the best groundwater reservoir?
A. high permeability and low porosity B. high permeability and high porosity C. low permeability and high porosity D. low permeability and low porosity