The caldera now filled by Crater Lake
a. ?is the center of the Mazama resurgent caldera
b. ?formed as the top of the Mt. Mazama collapsed into the magma chamber after a major eruption
c. was formed in a titanic eruption that destroyed Mt. Mazama and blasted pieces of it over hundreds of square kilometers.
d. ?is the cooled vent formed when Mt. Mazama became an extinct volcano
e. ?prevents future eruptions by providing a way to cool rising magma
ANSWER: b
You might also like to view...
The hydrologic cycle is driven primarily by ____.
A. solar energy B. lunar tides C. solar tides D. mechanical energy E. chemical energy
Which of the following is the cycle which utilizes lactate as the starting material for gluconeogenesis?
A) the Calvin cycle B) the citric acid cycle C) the Cori cycle D) the Krebs cycle
What is true of regional elevations across North America?
A. Elevations are highest in the Appalachian Mountains. B. Elevations do not change, when progressing from west to east. C. Elevations tend to be higher toward the west and decrease toward the east. D. Elevations are lowest in the Great Plains.
The Inuit people are at greatest risk to the biomagnification of persistent organic pollutants because, within their ecosystems, the Inuit people are functioning as
A) primary producers. B) primary consumers. C) secondary consumers. D) decomposers and detritus feeders.