2016年3月31日 星期四

Coral reefs cover less than 0.1% of the ocean floor but protect 150,000km of shoreline in more than 100 countries and territories.

Coral reefs cover less than 0.1% of the ocean floor but protect 150,000km of shoreline in more than 100 countries and territories. The colours that lure tourists are produced by single-celled algae that grow symbiotically in corals’ tissue. These use carbon dioxide respired by their host to make oxygen and carbohydrates through photosynthesis

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