Medical Quiz

Topics: Energy, Hydrology, Microbiology Quiz

What best explains why all of the Earth’s freshwater is not available for human use?

A. it is in groundwater

B. it is water vapor

C. it is frozen

D. it is all available for human use

Select your answer:
     


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How can upwellings improve fishing for ocean fishermen?

A. They bring nutrients from the cold, deep ocean waters

B. They provide ocean currents that travel to the equator

C. They cause cold water to sink

D. They are known to be good luck