Water vapor is often the most abundant dissolved gas within magma. What best describes the source of water in gas-rich magmas?
A. heavy rainfall in tropical areas
B. shallow groundwater circulating through continental crustal rocks
C. water-rich sediment in subduction zones
D. seepage of seawater into oceanic crustal rocks
E. all of the answers listed here
Answer: C
You might also like to view...
The dominant control in global sea surface temperature is
A) upwelling and thermocline zones. B) rising air along the equator. C) descending air in the subtropics. D) the supply of solar insolation.
What is the best definition for nonrenewable resources?
A) finite masses of material which cannot be used without depletion B) ores that are consumed primarily in the developing world C) commodities that command high prices during periods of scarcity D) resources that are below ground E) resources that occur only in nature (like wood)
Which of the following is defined as the bending of light rays as they pass through the atmosphere?
A) reflection B) refraction C) absorption D) scattering
Generally, cities with high cultural diversity tended to have relatively high percentages of talented individuals
Indicate whether the statement is true or false.