What type of eruption is shown in this photograph?
A. lava fountain
B. pyroclastic column
C. lava flow
D. pyroclastic flow
E. lava dome
Answer: C
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A 100-N falling object encounters 100 N of air resistance. The net force on it is
A. 100 N. B. 40 N. C. 60 N. D. 0 N.
The fault displacement from the 2011 Tohoku-Oki, Japan earthquake was the largest ever recorded. Indicate whether the statement is true or false
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Answer the following statement true (T) or false (F)
Which of the following is (are) true for an evolutionary diagram?
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