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6. What species of plant are found in grey fixed dunes?
- sea holly, red fescue
- thistle, bramble, bracken
- water mint, rushes and weeping willow
- marram grass
7. What is the correct order a sand dune is formed in (from coast in inland)
- embryo dune, yellow dune, fixed grey dune
- fixed grey dune, embryo dune, yellow dune
- yellow dune, embryo dune, fixed grey dune
- embryo dune, fixed grey dune, yellow dine
8. A sand dune is only able to form when which two things are present?
- obstacles to limit sand movement, longshore drift
- expanses of dry sand, biological weathering
- strong on-shore winds, obstacles to limit sand movement
- precipitation, soft rocks
9. What are blowouts evidence for?
- biological weathering
- over use by humans
- over use by animals
- longshore drift
10. What is the cause of the coloring of yellow sand dunes?
- Lack of plants
- Lack of sea water
- Lack of humus
- Lack of rain