Do coral reefs produce oxygen?

Yes, coral reefs do produce oxygen. 70% of the oxygen that all living beings breathe comes from the ocean. Though corals cover only 0.0025% of the ocean floor, they are the foundation of ocean health and without them, marine life would cease to exist. Corals are responsible for producing half of the oxygen present in the Earth’s atmosphere.

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• Coral Reefs – Characteristics & Types
• UPSC Prelims Environment and Ecology Question and Answers