What is one reason diatomaceous earth is economically valued?
a. It can be used as a fossil fuel alternative.
b. It can be used for various filtration systems.
c. It can be broken up for gravel and used as building materials.
d. It demonstrates the presence of "marine snow."
ANS: C
Diatomaceous earth has many uses to humans. It is mined for use in flat paints, pool filters, and
polishes to name a few. Information can be found in the section Pelagic Sediments Vary in
Composition and Thickness
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In dry climates _____ is a (are) prevalent process(es).
a - hydrolysis b - salt wedging c - frost wedging d - carbonation e - landslides
A firm that sells its products primarily to consumers outside its settlement is a
A) basic industry. B) functional classification. C) nonbasic industry. D) primate city. E) consumer service.
Azimuthal Projection
What will be an ideal response?
Segments of the oceanic ridge system that are gentler and less rugged in slope due to faster rates of seafloor spreading are called ________
A) deep-sea trenches B) fracture zones C) oceanic rises D) convergent plate boundaries E) transform faults