Threats to Biodiversity · NCERT Biology

Which of the following is a major threat to the biodiversity of the Great Barrier Reef?

  1. Desertification
  2. Ocean acidification and warming
  3. Over-population of indigenous sharks
  4. Excessive rainfall in the outback
Show answer and explanation

Correct answer: Ocean acidification and warming

Increased atmospheric CO2 leads to ocean acidification and rising sea temperatures. These factors cause coral bleaching and interfere with the ability of corals to build their calcium carbonate skeletons.

Difficulty: Medium Question 18 of 20

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