Coarsely crystalline igneous textures indicate that
A. the rock broke apart as it flowed.
B. there was a lot of gas in the magma.
C. the rock cooled quickly.
D. the rock cooled slowly.
E. the ash and pumice were hot and became compacted.
Answer: D
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Which of the following sites would have the most dangerous volcanoes? A is on an island arc, B is in the Andes, C is near Hawaii, D is along a midocean ridge.
A) A and B
B) B and C
C) C and D
D) A and C
E) B and D
Acidic soils
A) are exceptionally rare. B) cause more rapid weathering and leaching of nutrients. C) tend to be very fertile and excellent for agriculture purposes. D) are high in calcium, magnesium, potassium, and sodium ions.
The growth of human population worldwide over the past 1,000 years has been ________.
A. on a straight linear increase with time B. exponential, with a generally increasing growth rate C. logarithmic D. essentially zero E. exponential, with a constant growth rate
Strip mining is as hazardous to the miners as underground mining, because of the danger of acid drainage from strip mines.
Answer the following statement true (T) or false (F)