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b) A common misconception about rivers is that they all flow south.

a) Perhaps some people think that all rivers flow toward the equator or that rivers like to flow down toward the bottom of north-oriented maps.

e) The truth is that rivers (like all other objects on Earth) flow downhill due to gravity.

c) No matter where a river is located, it will take the path of least resistance and flow downhill as rapidly as possible.

d) Sometimes that path is south but it is just as likely to be north, east, west, or some other direction in between.