The Earth's largest mass extinction coincides with ________ in Siberia.
A. a significant climate change
B. a massive meteorite impact
C. expansion of glaciers
D. flooding of continental areas
E. massive volcanism
Answer: E
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A) quartz. B) potassium feldspar. C) pyroxene. D) amphibole. E) olivine.
When is a fold described as a plunging fold? What will be an ideal response?
A cost-benefit analysis of the acid rain prevention programs shows that
A) there was no net economic benefit. B) there was a large benefit and savings compared to costs. C) there was a large loss because costs far outweighed benefits. D) with vastly increased spending, the program could show a net benefit.
Most of the 245,000 deaths from the 2004 Indian Ocean tsunami occurred in ________.
A. Indonesia B. Sri Lanka C. Bangladesh D. India E. Thailand