The North American continent was covered by more ice than the South American continent at the height of the Ice Age
Indicate whether this statement is true or false.
Answer: TRUE
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The theory of seafloor spreading is supported by
A. paleomagnetic analysis of the ocean's floor. B. geological, biological, and climatological data. C. the change in Earth's polarity. D. none of the above
Stratospheric ozone depletion is currently most serious ________
A) over New Zealand and Australia B) over the Arctic Ocean C) over North America D) over tropical latitudes E) over the most populated and urbanized regions
What structural feature is associated with the prostaglandin F (PGF) group?
A) a carbonyl at carbon-9 B) a carboxylate at carbon-9 C) hydroxyl groups at carbon-9 and carbon-11 D) none of the above
Which of the following does not correctly describe the mass wasting disaster that occurred in Yungay, Peru, in May 1970?
A. Moving rock started the event. B. The death toll was close to 20,000. C. It was triggered by an earthquake. D. Glacial ice was involved. E. The town was built on top of debris from a previous slide.