Sources of water: exogenous, endoreic and ephemeral; episodic role of water; sheet flooding, channel flash flooding
Water reaches hot deserts in three main ways. When it does arrive, it comes suddenly and powerfully — causing rapid flooding across the surface or through dry channels.
Real World
The Nile is a classic exogenous river, carrying water from Ethiopian Highland rainfall across 3,000 km of Saharan desert, while Lake Eyre in Australia is an endoreic basin that filled completely in 2011 after rare cyclone-driven rainfall.
Exam Focus
Define exogenous, endoreic and ephemeral precisely — spelling and meaning of these specialist terms earn specific terminology marks.
Essay Framework
Use PEEL to structure every paragraph. Tap each step for guidance and an example.
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