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Djuro
@djuro
Certain algae called zooxanthellae (“zoox”) live inside corals, which are animals. The algae produce sugars that they pass to the corals, providing 90 per cent of their energy needs, while the corals provide nitrogen and shelter to the algae. Without this symbiosis, we would not have corals reefs, which are highly valuable to mankind. Seventeen percent of the world’s protein comes from reefs. One billion people depend on reefs for food, protection from storms, or employment.
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