Explain why living coral is often described as having a symbiotic relationship

Shallow water, reef-building corals have a symbiotic relationship with photosynthetic algae called zooxanthellae, which live in their tissues. The coral provides a protected environment and the compounds zooxanthellae need for photosynthesis. In return, the algae produce carbohydrates that the coral uses for food, as well as oxygen.

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population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

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