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If you were asking what the fresh water is called that flows across the surface of the land, then your answer would be:
Runoff is fresh water that flows along the surface of the ground. It originates from precipitation or melting snow and ends up in rivers, lakes, or oceans.
A river.
I assume you are asking "why" and not "what". Water, like all other matter on earth, is affected by the earths gravity. Gravity has pulled much of the surface water into large pools, we call oceans, that cover the lowest parts of the planet. Fresh water deposited on land by rain, sleet, snow, and hail will follow this same downward path towards the oceans.
So I guess the real answer to your question is gravity.
What else can I help you with?
What fraction of the worlds water is fresh?
fresh flowing surface water is one of our most precious resources
Fresh water flows across Earth's surface?
Fresh water flows across Earth's surface in rivers, streams, lakes, and glaciers. It is essential for supporting ecosystems, agriculture, and human populations. The water cycle ensures that fresh water is continually replenished and distributed around the planet.
A small flowing of body of fresh water?
It is a fresh water stream.
What is the color in natural state of matter for uranium?
A fresh surface of uranium is similar to the surface of a steel.
What are two fresh water ecosystems?
flowing water and standing water
What does river mean?
River means a large natural stream of fresh water flowing along a definite course, usually into the sea, being fed by tributary streams.
What kind of water does streams and river have?
Majority of rivers and streams have fresh water flowing in them.
What do the lungs give to the circulatory system?
Fresh rich oxygen to keep the circulatory flowing.
What is a smaller body of of fresh flowing water that join up to rivers called?
A "tributary".
What are the differences between river and waterfalls?
River is fresh water that flows while a waterfall comes from a high place.
The great lakes contain nearly one tenth or one fifth of the worlds fresh surface water?
It contains one-fifth of the worlds fresh surfacewateer!
How are groundwater and runoff alike?
Ground off and runoff are both precipitation and fresh water. Since they are fresh water, people use groundwater and runoff for households and drinking waters sometimes.
