What is the most serious climate change challenge in conserving the Great Barrier Reef?
Answer and explanation
Correct answer: Coral bleaching
Rising sea temperatures cause corals to expel the symbiotic algae that give them colour and energy. This produces coral bleaching; if heat stress continues, corals may die and reef ecosystems can be severely damaged. Ocean acidification is also harmful, but repeated large-scale bleaching is the most serious immediate climate-related challenge for the Great Barrier Reef. Exam tip: link unusually warm seawater with coral bleaching.
Frequently asked questions
What is the correct answer to this question?
Coral bleaching
Why is this the correct answer?
Rising sea temperatures cause corals to expel the symbiotic algae that give them colour and energy. This produces coral bleaching; if heat stress continues, corals may die and reef ecosystems can be severely damaged. Ocean acidification is also harmful, but repeated large-scale bleaching is the most serious immediate climate-related challenge for the Great Barrier Reef. Exam tip: link unusually warm seawater with coral bleaching.
Which subject and chapter does this question cover?
This is a Class 10 General Knowledge question. Chapter: World History. Topic: World Heritage Sites.
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