A volcanic neck can form by
A. erosion of the volcano, leaving behind the solidified conduit inside the volcano.
B. erosion of overlying rock layers exposing the conduit below the volcano.
C. Both of these choices are correct.
Answer: C
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Which of the following statements describes a neutral solution?
A. [H3O+] > [OH-] B. [H3O+] < [OH-] C. [H3O+] × [OH-] ? 1 × 10-14 D. [H3O+]/[OH-] = 1 × 10-14 E. [H3O+]/[OH-] = 1
Least-cost path analysis is _____based, and network analysis is _____based.
A. vector, vector B. raster, raster C. vector, raster D. raster, vector
E-85 ________
A) was an international summit of 85 nations that met to restrict CFC use B) is an ethanol-gasoline mixture used in flexible-fuel vehicles C) was an international summit of 85 nations that met to restrict greenhouse gas emissions D) was an international summit of 85 nations that met to determine vehicle fuel efficiency standards E) is an isotope of uranium used to generate electricity
Which of the following Earth materials is least resistant to solution?
A) Aluminum B) Calcium C) Magnesium D) Sodium E) Limestone