The strength of a rock
A. may depend on how long it has been subjected to stress.
B. may be reduced by weathering or fracturing.
C. varies with the kind of stress it is exposed to.
D. All of the choices are correct.
Answer: D
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The deadly 1998 tsunami in Papua New Guinea was caused by ________.
A. an undersea landslide triggered by an earthquake B. volcanic flank collapse triggered by an earthquake C. uplift of the seafloor during an earthquake D. an undersea landslide triggered by a volcanic eruption E. volcanic flank collapse triggered by an eruption
Which of the following won a Nobel Prize for studies of photosynthesis?
A) M. Calvin B) C. Cori C) H. Krebs D) L. Pauling
Which of the following molecules could be a different conformation of the underlined molecule below?
A. a B. b C. c D. all of the above E. none of the above
Some mollusks are segmented, indicating a common ancestor with annelids
Indicate whether the statement is true or false