Judge the following sentence according to the criteria given below: Seismologists have abandoned
Richter magnitudes in favor of moment magnitudes for describing earthquakes BECAUSE Richter
magnitudes do not accurately portray the energy released by large earthquakes on faults with great
rupture lengths.
a. The assertion and reason are both correct, and the reason is valid.
b. The assertion and reason are both correct, and the reason is invalid.
c. The assertion is correct and the reason is incorrect.
d. The assertion is incorrect and the reason is correct.
e. Both the assertion and the reason are incorrect.
A
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If world energy consumption remains constant, proved reserves of oil would last for how many years?
A) 40 years B) 80 years C) 160 years D) 320 years E) 640 years
Average annual temperature:
Which process acts to remove carbon dioxide from the atmosphere?
a. Lightning b. deforestation c. photosynthesis d. burning fossil fuels e. volcanic eruptions
A cratonic sequence is recognized by a:
a. transgressive phase followed by regressive phase. b. regressive phase followed by a transgressive phase. c. regressive phase only. d. transgressive phase only. e. lack of any sequence.