River.

River always flows downfill because gravity. `

As rivers flow,they erode or wear away the land.

Over a long period of

time rivers create valleys

or gorges and canyons.

They take the sediment

bits of soil and rock and

carry it along with them.

They then flow accros the

land meandering or going around

obejects such as hills and

large rocks.

They flow until they

reach a body of water.