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Topic 6: Oceans on the Edge

Topic 6: Oceans on the Edge. Unit 1 Revision GCSE Geography. Practice Question – Describe the distribution of coral reefs. (2 marks). What conditions do coral reefs develop in?. Coral reefs cover less than 1% of the earth’s surface and are located in areas with:

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Topic 6: Oceans on the Edge

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  1. Topic 6: Oceans on the Edge Unit 1 Revision GCSE Geography

  2. Practice Question – Describe the distribution of coral reefs. (2 marks)

  3. What conditions do coral reefs develop in?

  4. Coral reefs cover less than 1% of the earth’s surface and are located in areas with: • - Shallow water of 25m or less to ensure lots of light • - Tropical water temperature of 24-26°c • - Areas of saline water

  5. Study this page for 30 seconds…

  6. Explain 2 economic benefits of coral reefs. (4 marks)

  7. Threats to coral reefs Whilst watching the clip write notes explaining how coral reefs are at risk. • http://www.bbc.co.uk/learningzone/clips/the-impact-of-fishing-in-the-philippines/4692.html

  8. Threat to coral reefs include: • Population growth (more tourism, fishing) • Building on land (releases sediment into sea) • Dynamite fishing • Bottom trawling • Overfishing • Global warming

  9. Management Options • St Lucia –SMMA • Includes marine reserve (no fishing), permits for scuba/snorkelling, tourist permits, marine wardens. • Other areas of St Lucia do allow fishing • Is this SUSTAINABLE?

  10. Fish Fight • Overfishing is a global issue. Why? • What is the EU doing to try to control overfishing? • What can individuals do?

  11. Practice question • A) Explain how marine ecosystems are threatened by human activity. (4 marks) • B) Using examples, explain how marine ecosystems can be managed in a sustainable way. (6 marks)

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