Respuesta :
This is true.
If you are from the US, think of the Grand Canyon. The huge gorge carved in the rock was created by a river running along the rock for thousands of years, so it is true that rivers can help break down mountains.
If you are from the US, think of the Grand Canyon. The huge gorge carved in the rock was created by a river running along the rock for thousands of years, so it is true that rivers can help break down mountains.