Good morning, everyone. Today, in our marine biology lecture, we will discuss the impact of ocean acidification on coral reefs. As you know, increased carbon dioxide in the atmosphere is absorbed by the ocean, leading to a decrease in pH levels. This process, called ocean acidification, reduces the availability of carbonate ions, which are essential for corals to build their calcium carbonate skeletons. A recent study conducted by the University of Queensland monitored two reefs in the Great Barrier Reef over five years. The results showed that the reef with higher water circulation had a 30% slower rate of calcification compared to the more sheltered reef. However, the sheltered reef experienced a greater loss of biodiversity due to lower pH levels. So, while circulation can slow down structural damage, it does not prevent the overall ecological decline.
❓ According to the lecture, what did the study by the University of Queensland find about the reef with higher water circulation?
A. It had a lower pH level than the sheltered reef.
B. Its calcification rate decreased by 30% compared to the sheltered reef.
C. It experienced a greater loss of biodiversity.
D. It showed no signs of structural damage.
✅ Correct Answer
B. Its calcification rate decreased by 30% compared to the sheltered reef.