Which component of a river system is made of streams and small rivers that feed into a large river? Which component of a river system is also called a drainage basin? Which component of a river system is a ridge between water flowing in two directions?

Explanation: A river drainage basin is an area drained by a river and all of its tributaries. A river basin is made up of many different watersheds. A watershed is a small version of a river basin. Every stream and tributary has its own watershed, which drains to a larger stream or wetland.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

the awnser is group 12