Why is the Moment magnitude scale favored over the Richter magnitude scale?
A) The Richter magnitude is based on older models of seismographs that are no longer used to record earthquakes.
B) The Richter magnitude always underestimates the amount of energy released by an earthquake.
C) The Moment magnitude measures the total energy released by an earthquake.
D) The moment magnitude carries the calculated values out to more decimal places so it is more precise.
C
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Which type of human inhabited the Near East and Europe from 200,000 to 30,000 years ago and may have been a
subspecies of Homo sapiens or a separate species? a. Neanderthals b. australopithecines
c. anthropoids d. Cro-Magnon e. primates
Species with a steady death rate throughout life are characterized by
A) Type I survivorship. B) Type II survivorship. C) Type III survivorship. D) none of the above
Low-grade ore deposits are those that are not economically exploitable. Indicate whether the statement is true or false
____ connect(s) atoms by sharing the energy of paired electrons
A) Covalent bonds B) Hydrogen bonds C) Cohesion D) Adhesion