What percent of Earth's volcanic activity, each year, takes place on the seafloor?
A) 65%
B) 70%
C) 75%
D) 80%
E) 85%
E
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Among the following choices, the closest match for a divergent boundary is ________
A) the East African Rift valley B) the San Andreas Fault C) the Appalachian Mountains D) the Mariana Trench
A radiation fog is likely to form during the occurrence of a ground inversion
Indicate whether the statement is true or false
In the caste system, the ________ perform the dirtiest, most polluting jobs
A) Brahmins B) Mughals C) dalits D) Sikhs
In the late 1950's the Hebgen Lake earthquake outside of Yellowstone triggered a mass wasting event. The landslide originated on steep mountains slopes where rocks slid off a surface and descended to the valley floor in a few seconds, burying a campground and many people staying there. This type of landslide would be called:
A. a rock avalanche B. a rockslide C. lahar D. silicate E. scarp