A hot rock deep in Earth may melt if it is subjected to an increase in pressure
a. True
b. False
ANSWER: False
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Tropical forests in the Amazon basin and other South American countries are primarily being cleared or burned for ____.
A. biodiesel fuel for motor vehicles B. cattle grazing and soybean plantations C. firewood and small-scale farming D. oil palm and paper pulp plantations E. coffee and spice plantations
In 1845, the human population of Ireland experienced a major crash as a result of
A. the plague. B. the potato fungus. C. an influenza epidemic. D. a prolonged drought. E. HIV/AIDS.
Which characteristic does not apply to trilobites?
a. abundant in modern oceans b. excellent guide fossils c. benthos, mobile d. sediment-deposit feeder e. invertebrate
What are the principle soil horizons? What processes dominate in each horizon?
What will be an ideal response?