NDA2021General AbilityGeneral ScienceActual
Keppel Island is completely bleached mainly due to the expansion of
Options
- AStarfish.
- BBlue whale.
- COctopus.
- DSea horse.
Correct answer
A. Starfish.
Step-by-step solution
- Coral bleaching in Keppel Bay - In the shallow waters of Keppel Bay, coral bleaching on a mass scale is infrequent and recovery is usually fast. - Coral bleaching occurs when warmer than usual water combines with high levels of sunlight causing the coral to expel the algae that live in its tissues. - Without the algae, known as 'zooxanthellae', the coral loses its energy source and its colour - Keppel reefs can recover rapidly from bleaching because of the excellent growth rates of branching species - After the 2