What is the volcanic explosivity index (VEI) of a Yellowstone super-eruption?
A. VEI of 6
B. VEI of 2
C. VEI of 8
D. VEI of 4
Answer: C
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Which region has the largest number of the 10 most populous countries within its boundaries?
Widespread cyclothem deposition in the Pennsylvanian has been attributed to glacial advances
and retreats on Gondwana. Indicate whether the statement is true or false.
A major study of the effectiveness of the PSA (Payment for Environmental Services) program in Costa Rica determined that ________
A) deforestation rates began to decline as an immediate result of the program, but farmers quickly removed their land from the program and reverted to their prior deforestation practices once they were paid B) the program was initiated too late for the forests of Costa Rica to recover C) the program was counterproductive because deforestation continued unchecked even after landowners signed up for the program D) deforestation rates had already been dropping before the program was started E) the program was extremely effective, and deforestation rates began to decline as soon as the program was instituted
When groundwater recharge is less than discharge it can cause land subsidence to occur.
Answer the following statement true (T) or false (F)