steep gradient, more gentle gradient, flat gradient, waterfalls, gorges and rapids, floodplains, deltas, estuaries, meanders, oxbow lakes, floodplains, widest, deepest channel, narrow and shallow channel, wider and deeper channel, flat, wide floodplain, v-shaped valley, gentle sloping valley.

Papan mata

Gaya visual

Pilihan

Tukar templat

Pulihkan autosimpan: ?