Which of the following terms is used to describe a large circular depression that forms after an eruption when a magma chamber becomes empty and collapses in on itself?
A. crater
B. tuff-cone
C. sinkhole
D. caldera
E. lava pit
Answer: D
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A) time B) cultural practices C) natural landscapes D) geology and climate E) time, cultural practices, natural landscapes, geology and climate
What do wastewater treatment facilities primarily depend upon for the breakdown of organic materials in wastewater?
A) The neutralizing effects of high levels of oxygen B) Microorganisms C) Large amounts of antibiotics and disinfecting chemicals D) Lots of chlorine bleach
Earth science can help us learn about Earth's past by studying
A. how global climate has changed since the ice ages. B. why a landscape looks the way it does. C. why continents and oceans are different. D. how life in the past was different than today. E. All of these choices are correct.
Which of the following might correspond to the O2 pressure in a hyperbaric chamber?
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