The most important measure of the size of a river is the
a. size of its watershed.
b. number of its tributaries.
c. volume of its discharge.
d. width of its mouth.

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Your question: The most important measure of the size of a river is the..?

Your  The most important measure of the size of a river is the volume of its discharge.

The answer is option C.

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Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

It is the second answer