Coral bleaching results when the symbiotic zooxanthellae, a single-celled algae, are released from the original host coral organism due to stress. when the zooxantheallae are released, the coral loses its pigment, resulting in a bleached or completely white appearance. the most common cause of coral bleaching is

D) All four factors effect coral bleaching to varying degrees. The most common cause of coral bleaching is increased water temperature. Increased water temperature may be a result of thermal pollution or increased ocean temperatures due to global warming.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs