The average salinity of sea water may be expressed as
A) 3.5 percent, or 35 parts per thousand.
B) 35,000 parts per million.
C) 35 grams per kilogram.
D) All of these are correct.
E) None of these is correct as stated.
Ans: D) All of these are correct.
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A) gives up additional energy when it condenses. B) has more energy per kilogram than boiling water. C) both A and B D) neither A nor B
Ores from the Sudbury mining district were concentrated during the Proterozoic by hydrothermal
activity at black smokers. Indicate whether the statement is true or false.
We can generally expect the air to be __________ above areas of surface low pressure and
__________ above areas of surface high pressure. a. rising, rising b. rising, sinking c. sinking, sinking d. sinking, rising
Liquid water has the unique physical property of contracting in size by ~9% upon freezing.
a. true b. false