Coal-fired power plants waste about two-thirds of the energy released by burning the coal.
Answer the following statement true (T) or false (F)
True
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What are the two primary factors that determine how magma erupts?
A cubic centimeter each of quartz, olivine, and native gold weighs 2.5, 3.0, and 19.8 grams, respectively. These weights indicate that ________
A) gold has a higher density and specific gravity than quartz and olivine B) olivine melts at a higher temperature than either gold or quartz C) gold is 6 to 7 times harder than olivine and quartz D) gold and olivine qualify as silicates, but quartz would not
Relative humidity gives a measurement of the amount of water in the air, and is usually measured in grams per cubic meter
Indicate whether the statement is true or false
Which of the following is a type of secondary structure?
A) a-pleated sheet B) b-helix C) both a and b D) neither a nor b