Rivers east of the continental divide in the Rockies drain into the
a. Pacific drainage.
b. Gulf/Atlantic drainage.
c. Hudson Bay/Arctic drainage.
d. interior West drainage.
Answer: b. Gulf/Atlantic drainage.
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If a population of species in an ecosystem does not fluctuate much over time, the ecosystem
A) has no significant buffering mechanisms. B) has many "eury" species. C) is said to be stable. D) has low inertia.
A shell of an ancient marine bivalve is an example of a body fossil
a. True b. False
A comparison of ages calculated by carbon-14 analysis with ages known by other means results in
A) a match of the ages, within known uncertainties. B) the calculated ages being older. C) the known ages being older. D) some calculated ages being younger and some older.
The term used to denote the part of a volume of soil that is filled with air, gases, or water is
A) soil texture. B) porosity. C) permeability. D) soil structure.