What causes streams and rivers?

Answer 1

Gullies join together to form a larger channel called a stream. A stream is a channel along which water is continually flowing down a slope. Unlike gullies, streams rarely dry up. Small streams are also called creeks or brooks. As streams flow together, they form larger and larger bodies of flowing water. A large stream is often called a river.

Answer 2

what causes river's?

NO it's Precipitation, that is rain or snow, will, by force of gravity, always try to find its own level, which in most cases is the sea or ocean: It flows downhill. In doing so it will erode a route which initially is a stream & then becomes, by tributaries, a river. So a river is the collective result of streams caused by the gravitational effect of water flowing to the sea.

ALSO A river is formed when water draining from mountanous terrain or some other watershed flows into a valley via smaller streams. The streams join together and their combined volume of water forms a river with the force of the water cutting a channel as it flows downhill toward a lake, sea, or ocean.

Answer 3

The steady wear of the river can change the land itself, for example the Grand Canyon was carved out by erosion caused by a river. Also it attracts life, such as people and animals, who change the land they live on.