Question

standard 11 short note bleaching of coral reefs​

Answer 1

Coral bleaching:

• Coral bleaching occurs when coral polyps expel algae that live inside their tissues.
• The algae provides 90% energy of coral energy. Coral Continue to live but begin to starve after bleaching, some coral recover.
• The leading cause of coral bleaching is rising temperature(global warming).

List of some causes:-

• Increased or reduced water temperature,
• Oxygen starvation caused by an increase in zooplankton levels as a result of overfishing.
• Bacterial Infections.
• Extreme low tide and exposure.
• Mineral dust.
• Ocean acidification.

Impacts:-

• If the reef vanished, expert says, Hunger, Poverty and Political Instability Could ensue.
• The extinction of reefs would create ultimately create a domino effect that would trickle down to human societies that depend on fish livelihood.
• Coral reefs act as protective barriers for the coastlines  by reducing wave impact, which lowers the damage from storms.
• Changes in ocean chemistry.
• Infectious Disease.

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Thank you

Mark the Ans.