What is a direct cause of coral bleaching?
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A direct cause of coral bleaching is when algae leave the coral. Algae live in a symbiotic relationship withcoral and are what give thecorals their color. ... Algae can leave coral for the following reasons: warming ocean water, which is the mainreason for coral bleaching. pollution.
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Warmer water temperatures can result in coral bleaching. When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. ... In 2005, the U.S. lost half of its coral reefsin the Caribbean in one year due to a massive bleaching event.
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