Today in our marine biology lecture, we're discussing the impact of ocean acidification on coral reefs. As carbon dioxide levels rise, the ocean absorbs more CO2, leading to a decrease in pH. This makes it harder for corals to build their calcium carbonate skeletons. A recent study monitored two reef systems: one in the Great Barrier Reef and another in the Caribbean. Surprisingly, the Caribbean reef showed a slower growth rate decline, but a higher incidence of bleaching. The researchers concluded that while acidification affects both, local factors like water temperature and pollution play a more significant role in bleaching events. So, the key is not just global CO2, but regional stressors.
❓ What did the recent study find about the Caribbean reef compared to the Great Barrier Reef?
A. A. It had a faster growth rate decline and more bleaching.
B. B. It had a slower growth rate decline but more bleaching.
C. C. It had a slower growth rate decline and less bleaching.
D. D. It had a faster growth rate decline but less bleaching.
✅ 正确答案
B. It had a slower growth rate decline but more bleaching.