Which of the following is NOT a way in which a volcano's history indicates the level of hazard it poses to nearby population centers?
A. average time between eruptions
B. age of the oldest volcanic layer present
C. abundance of felsic pyroclastic materials in its deposits
D. length of time since last eruption
Answer: B
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Cross-beds indicate that current flow changed direction and the new direction flows across the old
direction at an angle. Indicate whether the statement is true or false.
Although Portland, Oregon's population increased by 69% between 1980 and 2014, its urban area expanded by only 3%. This illustrates the use of ____.
A. urban growth boundaries B. regressive taxes C. strict zoning laws D. permitting restrictions E. mixed use neighborhoods
What is another name for swidden agriculture or shifting cultivation?
A) pastoral nomadism B) industrial agriculture C) livestock ranching D) slash-and-burn agriculture E) dairy farming
Health organizations now use the ________, a tool to ________.
A. Mortality and Morbidity Measure (3M); judge the total impact of the disease rather than only measuring how many people die B. DALY; judge the total impact of how many people die C. Morbidity Measure; judge the total impact of the disease rather than only measuring how many people die D. DALY; judge the total impact of the disease rather than only measuring how many people die E. Morbidity Measure; judge the total impact of how many people die