For freshwater organisms, landscapes are divided naturally into discrete drainage basins by watersheds ... speciation highlights the important role of geography in the formation of species ...

A drainage basin is the area of land that is drained ... to use aerial photos and OS maps is an important skill for GCSE Geography. Flood management - CCEA The likelihood of a river bursting ...

Basins with a higher drainage density (number of tributary rivers) collect rain water more quickly, therefore the lag time will be shorter. Permeable rocks close permeable rockA type of rock which ...