KBC 2022| Ques : Due to global warming, coral undergoes ‘bleaching’ and changes to which of these colours? By Udit Lakhoria - September 19, 2022 KBC 2022| Choose the correct option Question: Due to global warming, coral undergoes ‘bleaching’ and changes to which of these colours? A. Red B. White C. Black D. Green The correct option is B, White.