If the pH of a solution is 10, what is the hydronium ion concentration?
A. 1 × 1010 M
B. ?1 × 1010 M
C. 10 M
D. ?10 M
E. 1 × 10-10 M
Answer: E
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All of the following are cold currents except for the
A) North Equatorial Current. B) Humbolt Current. C) California Current. D) Benguela Current.
Concurrent range zones are used in fossil correlation because most fossils:a
have long geologic ranges. b. are very rare. c. are geographically restricted. d. are not common. e. are not well preserved.
Global temperature trends can be reconstructed from proxy records such as ________ and ________
A) lake sediments; gases trapped in glacial ice cores B) the frequency of volcanic eruptions; fossils C) the frequency of volcanic eruptions; gases trapped in glacial ice cores D) fossils; sea level records
A slow form of mass wasting is called Creep.
a. true b. false