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Hindi Medium: (Delhi) - GS Foundation (P+M) : 6th July 2026, 6:00 PM Hindi Medium: (Prayagraj) - GS Foundation (P+M) : 5th July 2026, 8:00 AM English Medium: (Delhi) - GS Foundation (P+M) : 20th July 2026 English Medium: (Prayagraj) - GS Foundation (P+M) : 15th July 2026, 8:00 AM Hindi Medium: (Delhi) - GS Foundation (P+M) : 6th July 2026, 6:00 PM Hindi Medium: (Prayagraj) - GS Foundation (P+M) : 5th July 2026, 8:00 AM English Medium: (Delhi) - GS Foundation (P+M) : 20th July 2026 English Medium: (Prayagraj) - GS Foundation (P+M) : 15th July 2026, 8:00 AM

Yellow Band Disease

  • Yellow-band disease is a bacterial infection that adversely affects coral. This causes light yellow or white spots on the infected coral reef.
  • It destroys the main energy source of the coral symbiotic photosynthetic algae zooxanthalli which causes the death of the coral.
  • Rising water temperatures due to climate change, overfishing and pollution can make coral more vulnerable to yellow-band disease.
  • At present the coral reef on Samsae San island of Thailand is being destroyed due to the infection of this disease.
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