Geography

Concepts to cover

1. Lakes by origin: tectonic, volcanic (crater, caldera), glacial, fluvial (oxbow), lagoon, aeolian, artificial
2. Lake decline and drying: siltation, diversion and human withdrawal (Aral Sea, Lake Chad, Lake Faguibine)
3. Island types: continental, oceanic (volcanic), coral
4. Conditions for coral growth: temperature, depth, salinity, clear sediment-free water
5. Fringing reef, barrier reef, atoll; Darwin's subsidence and Daly's glacial control theories