Which of the following hazards can be caused by volcanic eruptions?
a. Tsunamis that can wash away coastal towns
b. Landslides and Lahars that can bury the land surface
c. Lava flow overrunning roads and towns, and ash falls that can blanket the landscape
d. All of the above
e. Both a and c
Ans: d. All of the above
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Which of the following is primarily known as a selective absorber of ultraviolet radiation?
A. water vapour B. carbon dioxide C. clouds D. ozone
United States Geological Survey stream-gauging stations measure all but which of the following?
A. water velocity B. water depths C. channel width D. oxygen isotope ratios
Human sources of nitrous oxide in the atmosphere include all of the following EXCEPT ________
A) feedlots B) automobiles C) synthetic nitrogen fertilizers D) burning fuel wood E) chemical manufacturing plants
An extensive aquifer, the ________, is present and allows irrigated agriculture from Nebraska to Texas
What will be an ideal response?