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  1. Coral Reefs - National Geographic Society

    网页2024年7月18日 · Coral reefs are important ocean habitats and offer a compelling case of the risks of climate change. Reefs provide a large …

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    • Coral reefs: Essential and threatened | National Oceanic and ...

    • Coral reef - Wikipedia

    • Corals Tutorial: Why are coral reefs important? - NOAA's National …

    • Coral reef | Description, Geochemistry, Origins,

      网页2024年9月24日 · Coral reef, ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of coral polyps and other coelenterates. A coral reef may grow into a permanent coral island. …

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    • Corals Tutorial: How Do Coral Reefs Form? - NOAA's National …

    • The corals of the Great Barrier Reef: illustrated

      网页2017年6月30日 · Three-quarters of the world’s 798 coral species can be found on Australia’s Great Barrier Reef, and they come in a huge variety of shapes, sizes and colours. There are more than 600 coral species in the …

    • Coral Reefs | Learn Science at Scitable - Nature

    • Coral - National Geographic Society

      网页2024年7月18日 · Coral reefs are among the most complex and fascinating marine ecosystems in the sea, and they include a wide range of symbiotic relationships. Coral reefs are sometimes known as the “rainforests of the …

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