The Permian mass extinction event was most likely caused by enormous volcanic (trap) eruptions.
A. True
B. False
Ans: A. True
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What is the most serious natural hazard in Bangladesh?
A) flooding B) wildfires C) earthquakes D) volcanoes E) severe tornadoes
What is a characteristic of the water that is expelled from hydrothermal vents?
A) The water is more acidic than normal sea water. B) The water is enriched with metals. C) The water has higher concentrations of dissolved gases. D) All of these choices are true.
What is TRUE regarding the demise of the feudal aristocracy?
A) It was gradual in some places (England) and sudden in others (France). B) Inheritance laws prevented the rich class from maintaining itself. C) The rich were forcibly confined to their castles everywhere by 1600. D) The Church contributed to its fall. E) Taxation eliminated it from southern Europe.
Satellites in a(n) _______________ orbit stay located over the same spot above Earth
Fill in the blank(s) with correct word