Which of the following is the unit of pressure most commonly found on a surface weather map?
A. inches of mercury
B. atmospheres
C. pounds per square inch
D. hectopascals
Answer: D
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Which statement about the precautionary principle is accurate?
A. Manufacturers of chemicals in the U.S. strongly object to passing new laws that would apply the precautionary principle. B. Manufacturers of chemicals in the U.S. strongly favor passing new laws that would broadly apply the precautionary principle. C. Environmental scientists believe that the precautionary principle is scientifically unsound and without merit. D. The average U.S. citizen is quite knowledgeable about the precautionary principle and wants it to apply to all new chemicals.
Upon ingestion, grain alcohol, C2H6O, is metabolized into acetaldehyde, C2H4O, which is a toxic substance causing headaches as well as joint pains typical of a "hangover." Is the grain alcohol oxidized or reduced as it transforms into acetaldehyde?
A. The grain alcohol is oxidized. B. The grain alcohol is reduced. C. Some of the grain alcohol is oxidized and some is reduced to other products. D. The grain alcohol is neither oxidized nor reduced.
Scientists analyze data before they take any other steps to investigate natural processes, since that is the only logical place to start
Indicate whether the statement is true or false
Metamorphism ends when the rock begins to melt
Indicate whether this statement is true or false.