A student researching coral bleaching has taken the following notes:
• Coral bleaching occurs when corals expel symbiotic algae • Stress from rising ocean temperatures is the primary cause • Bleached corals are not dead but are severely weakened • Prolonged bleaching leads to coral death • The Great Barrier Reef has experienced mass bleaching events in recent years
The student wants to explain the process and consequences of coral bleaching. Which choice most effectively uses relevant information from the notes?
The Great Barrier Reef has experienced mass bleaching events in recent years.
When stressed by rising ocean temperatures, corals expel their symbiotic algae, becoming severely weakened and eventually dying if conditions persist.
Rising ocean temperatures are the primary cause of coral bleaching worldwide.
Bleached corals are not immediately dead but are severely weakened.
Correct Answer: B
Choice B. Explains temperature stress, algae expulsion, weakening, and potential death.