What is the meaning of coral bleaching ........

Environment and Ecology Biodiversity

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What is the meaning of coral bleaching?

Paling of coral color or decline in zooxanthellae

Impacts of excessive sea trade

Overfishing which result in phytoplankton population explodes

Over exploitation of coral reefs

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Explanation:

1st option is correct.
Coral bleaching occurs when coral polyps expel algae that lives inside their tissues. Normally, coral polyps live in an endosymbiotic relationship with the algae and that relationship is crucial for the coral and hence for the health of the whole reef. Bleached corals continue to live.