IB Geography: Ecosystems and Human Activity: Psammosere
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Richard Allaway, Teacher of Humanities and IB Geography at International School of Geneva - Campus des Nations and geographyalltheway.com, added this to the group Geography Presentations
IB Geography: Ecosystems and Human Activity: Psammosere - Presentation Transcript
- Sand Dunes
- Conditions for Dune Formation
- A plentiful supply of sand.
- A shallow offshore zone with gentle gradients, where large exposures of sand dry out at low tide.
- An extensive backshore area where sand can accumulate.
- Prevailing onshore winds.
- The growth of vegetation, such as Sea Couch Grass.
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