Multiple choice

When coral reefs are in trouble, the coral turns white, in a process called coral bleaching, caused by

  1. The sun's rays heating the coral

  2. Local pollution of coral reefs

  3. The effect of climate change in heating our ocean

  4. Overfishing of coral reefs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Coral bleaching occurs when corals experience stress, primarily from rising ocean temperatures driven by global climate change, causing them to expel the symbiotic algae (zooxanthellae) living in their tissues.

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