________ is the lowest-grade rock in progressive metamorphism.
A. Slate
B. Marble
C. Phyllite
D. Schist
E. Gneiss
Answer: A
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Mid-ocean ridges are almost free of sediment.?
Indicate whether the statement is true or false
What is the most common type of atoms joined together in a process called nuclear fusion
A. hydrogen. B. carbon. C. oxygen. D. nitrogen.
What steps are involved in having a hypothesis become an established theory?
A. A United Nations scientific panel votes on whether the hypothesis is accepted. B. The hypothesis makes sense when explained by politicians. C. The hypothesis is consistent with new data and investigations used to test its predictions. D. A U.S. government agency votes on whether the hypothesis is accepted.
The volcanic activity in Yellowstone National Park is caused by ________
A) subduction B) a divergent plate boundary C) intraplate volcanism D) a transform plate boundary