How is magma generated along subduction zones?
A) Decompression melting of the mantle from weight reduction.
B) Fluids are dehydrated out of the descending plate, which lowers the melting point of the surrounding mantle.
C) Friction from colliding plates melts mantle material.
D) Radioactive decay melts mantle material.
Answer: B
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Organic acids can chemically weather a rock. Where would these acids originate?
A) Decay of granite B) Thermal reaction between water and limestone C) Secretion from and decay of vegetation D) Leaching from the E horizon
Corridors have the potential to effectively enlarge which of the following?
A. Feeding ranges B. Areas of refuge against natural disasters (e.g., fire) C. Preserve areas D. Genetic pools E. All of the above are correct
Pebbles and cobbles would most likely be transported by a river as ____
a. bed load b. discharge load c. suspended load d. solution load
The Somoza family dictatorship took place in _________________.
Fill in the blank(s) with the appropriate word(s).