Coral Reefs: Formation, Benefits, and Threats
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Questions and Answers

What is the temperature range that coral reefs require for optimal growth?

  • 18-26 degrees Celsius (correct)
  • 10-18 degrees Celsius
  • 30-35 degrees Celsius
  • 26-30 degrees Celsius
  • Which of the following is NOT a benefit of coral reefs?

  • Contribute to the global economy
  • Carbon dioxide absorption (correct)
  • Break up wave action
  • Source of food
  • How many people are estimated to rely on coral reef systems for their livelihood?

  • 400 million
  • 200 million
  • 300 million
  • 500 million (correct)
  • Which activity is a primary threat to coral reefs due to contamination?

    <p>Urban development</p> Signup and view all the answers

    What is one direct consequence of global warming on coral reefs?

    <p>Coral bleaching</p> Signup and view all the answers

    What is one method of managing coral reefs effectively?

    <p>Marine park tourism</p> Signup and view all the answers

    Which of the following is a common misconception about coral reefs?

    <p>They are not affected by human activity</p> Signup and view all the answers

    What is one purpose of coral reefs breaking up wave action?

    <p>To reduce coastal erosion</p> Signup and view all the answers

    Study Notes

    Coral Reef Formation

    • Coral reefs are found in tropical and subtropical waters.
    • They require specific conditions:
      • Warm, shallow salt water with temperatures between 18-26 degrees Celsius
      • Clean, clear water free of sediment
    • They are one of the oldest ecosystems in the world.
    • Highly vulnerable to human activity and pollution.

    Benefits of Coral Reefs

    • 500 million people rely on coral reefs for:
      • Livelihoods
      • Food
      • Coastal protection
    • Coral reefs break waves, reducing coastal erosion.
    • Contribute $375 billion to the global economy annually through fishing and tourism.
    • They contain potential medicinal properties:
      • Painkillers extracted from coral venom
      • Cancer treatments from algae
      • Treatments for heart disease and HIV

    Threats to Coral Reefs

    • Urban development:
      • Land clearing and wetland drainage increase erosion.
      • Sediment runoff blocks sunlight, hindering coral growth.
    • Pollution:
      • Fossil fuels, chemical waste, and agricultural fertilizers contaminate the water.
    • Tourism:
      • Boat anchors, tourist activities, and petroleum pollution damage coral reefs.
    • Climate Change:
      • Global warming increases water temperature, causing coral bleaching.
    • Invasive Species:
      • Crown-of-thorns starfish prey on coral polyps, affecting the entire ecosystem.

    Managing Coral Reefs

    • Various projects aim to protect and restore coral reefs:
      • Education programs
      • Plastic pollution control
      • Minimizing fertilizer use
      • Crown-of-thorns eradication
      • Using environmentally friendly transportation
      • Reducing stormwater runoff
      • Renewable energy development
      • Responsible stewardship by organizations
      • Marine park tourism
      • Conscious aquarium fish purchases
      • Zoning
      • Raising awareness

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    Coral Reefs PDF

    Description

    Explore the diverse aspects of coral reefs, including their formation in tropical waters, the vital benefits they provide to millions of people, and the significant threats they face from urban development and pollution. Understand why these ecosystems are crucial to marine biodiversity and the global economy.

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