The Appalachian Mountains are the result of a continental-continental plate collision. Indicate whether the statement is true or false
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At some Cretaceous-Paleogene boundary sites, the impact hypothesis is supported by the existence of ____
A)high concentrations of platinum B)shock-metamorphosed quartz grains C)dinosaur fossils D)the absence of dinosaur fossils E)high concentrations of volcanic rocks
What element is oxidized in the following equation and what element is reduced? Sn2+ + 2 Ag ? Sn + 2 Ag?
A) The tin ion, Sn2+, is oxidized, while the silver, Ag, is reduced. B) The tin ion, Sn2+, is reduced, while the silver, Ag, is oxidized. C) Both the tin ion, Sn2+, and the silver, Ag, are reduced. D) Both the tin ion, Sn2+, and the silver, Ag, are oxidized.
What type of eruption formed the main volcanic features in this figure?
A. large pyroclastic eruptions B. lava fountain C. eruptions beneath the seafloor D. fluid lava flows E. fissure eruptions
Most granitic batholiths are generated ________
A) along transform faults, which accounts for their linear geographic distribution B) along hot spot chains beneath continents, like a welder cutting through the continent to make a linear belt of intrusive granites C) as intrusions beneath composite volcanos along convergent plate margins D) where spreading ridges occur beneath continents