What type of magma is produced when the asthenosphere starts to melt at divergent boundaries?
a) Mafic magma
b) Silicic magma
c) Intermediate magma
d) Granitic magma
e) Andesitic magma
Answer: a) Mafic magma
You might also like to view...
North Korea's major rice producing area lies in the:
A) northeast B) northwest C) southeast D) southwest
Hard/Structural stabilization of a beach
A. is banned by the Coastal Management and Protection Act. B. is the best method for controlling beach erosion. C. is necessary to create littoral drift. D. often results in more, rather than less beach erosion.
List three rock types in the fluvial lytle formation as shown by the lithologic symbols ______
Fill in the blank(s) with the appropriate word(s).
What is (are) the most pressing environmental problem(s) facing the Russian Domain today?
A) air pollution B) water pollution C) sea level rise D) air and water pollution E) desertification