Which of the following is least likely to be a volcano?
A. a hill with a crater formed at the site of an eruption
B. a fissure that erupts hot, molten lava
C. a hill capped by volcanic rocks
D. a vent where magma and other volcanic material is erupted
E. a mountain that erupts only volcanic ash
Answer: C
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All of these types of faults are common in the Himalaya Mountains except
a. thrust faults. b. normal faults. c. reverse faults. d. strike-slip (transform) faults.
Analysis of bedbug control options has revealed that
A) a single pesticide can give effective control. B) infestations do not respond to any type of control. C) adequate control will pose serious health risks to people. D) a combination of several methods will be needed to have effective control.
At present, the world population is growing at about 8.5 percent per year for a doubling time of 20 years.
Answer the following statement true (T) or false (F)
Keeling's reports from Mauna Loa demonstrated ________
A) that as distances from cities decreased, CO2 concentrations increased B) that CO2 levels have been stable over the last 40 years C) that sediments deposited on the seafloor can yield clues about past climates D) the presence of El Niño E) an increase in tropospheric CO2 from the 1950s to present