One way to prevent slope failure is to ________.
A. drain ground water from the slope
B. re-grade the slope so that it is more gently inclined
C. retain or establish vegetation to protect the slope
D. pin the rock onto the slope with rock bolts or other devices
E. All of the answers are correct.
Answer: E
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The igneous feature shown in this photograph is a
A) dike.
B) sill.
C) volcanic neck.
D) batholith.
Why are maritime air masses from the north Atlantic of only limited concern for weather in the U.S.?
A) They never cause severe storms. B) Polar fronts block these air masses from the U.S. C) Temperatures are usually mild over this region. D) Question is incorrect; these air masses are very important. E) Prevailing winds move them away from the U.S.
What is the leading cause of water pollution?
A. mining B. factories C. sewage treatment plants D. agriculture activities E. ocean-going shipping
Sclerophyllous vegetation is common in which climate region?
a. Tropical rainforest b. Humid subtropical c. Mediterranean d. Marine west coast