Slow cooling produces ________ crystals, whereas fast cooling produces ________ crystals
Fill in the blank with correct word.
Answer: large; small
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Which of the following statements is the best description of the total MSW generation between 1960 and 2010?
A. Between 1960 and 2000, total MSW generation increased. After 2000, total MSW generation declined. B. Between 1960 and 2010, total MSW generation remained constant. C. Between 1960 and 2005, total MSW generation increased at a steady rate. After 2005, total generation leveled off. D. Between 1960 and 2010, total MSW generation increased steadily.
What is particularly troublesome about the practice of mountaintop removal for mining coal in the mountains of West Virginia?
A. Dumping of waste rock in the surrounding valleys B. Land subsidence C. Cave-ins D. Gas explosions
Which of the following is not a location in which volcanoes typically occur?
A) hot spots B) sea-floor spreading centers C) subduction zones D) where continental and oceanic plates converge E) plutons
Hot mineral-rich seawater is ejected from ____
a. volcanic arc systems
b. convergent boundaries c. submarine hydrothermal vents d. SPAHs (sulfur, phosphorus, and hydrogen) vents e. subduction zones