Coral reefs - Marvel EDU

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Practice Listening: Multiple Choice, Single Answer ID: #4648 Short Coral reefs

Instructions ›

Listen to the recording and answer the multiple-choice question by selecting the correct response. Only one response is correct.

Transcript:

Coral reefs are in jeopardy in oceans across the world. Beginning in 2014, a global heatwave raised the temperature of seawater more than three degrees Fahrenheit above normal levels. The increase drove away the microscopic algae that ordinarily live inside the corals and provide them with food. Within three years, over 67 per cent of reefs around the world had been affected by starvation or disease caused by the excess heat. Although scientists expect many coral reefs to recover, since water temperatures began to cool in 2017, they also believe the surviving corals will be more susceptible to disease. And global-warming trends mean that, in the longer term, it is likely that similar episodes will become more frequent and more severe.

What does the speaker believe will happen in the future?

* Listen to the recording and select the correct answer

Coral reefs will be restored to full health as sea waters continue to cool. New coral growth will be less vulnerable to disease. The algae living in reefs will better tolerate higher water temperatures. Corals will suffer further from increased sea temperatures.

Result:

AI explanationShows the answer. Tap to open.

Option 4: "Corals will suffer further from increased sea temperatures."

Explanation: The text indicates that global-warming trends will likely lead to more frequent and severe episodes of heat, which suggests that corals will continue to suffer from increased sea temperatures. This aligns with the author's concern about the long-term impact of rising temperatures on coral reefs.

Option 1: "Coral reefs will be restored to full health as sea waters continue to cool."

Explanation: The text mentions that while scientists expect some coral reefs to recover due to cooling temperatures, it does not state that they will be restored to full health. The phrase 'more susceptible to disease' indicates that recovery may not lead to full health, contradicting this option.

Option 2: "New coral growth will be less vulnerable to disease."

Explanation: The text suggests that surviving corals will be more susceptible to disease, which directly contradicts the idea that new coral growth will be less vulnerable. Therefore, this option is not supported by the information provided.

Option 3: "The algae living in reefs will better tolerate higher water temperatures."

Explanation: The text states that the increase in temperature drove away the algae that provide food for corals, indicating that the algae are not adapting to higher temperatures. Thus, this option is not aligned with the text.

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