Geography

 geography, as a field of study, encompasses various aspects pf the Earths surface and its features, including physical features like mountains, river, and ecosystems, as well as human elements like cities, cultures, and economies.

On may 14 we learned about stages of river.

There are three stages of river.

Youthful :A fast-flowing river characterized by a deep, narrow erosion pattern forming a V-shaped channel or valley.

Mature: A river with a gradient that is less steep than those of youthful rivers and flows more slowly than youthful rivers. 

Old stage: The old stage is also called the lower course of the river. Here the main function of the river is deposition. The features formed during this stage are estuary and delta.