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Listen to an Announcement Test #196
Listen to an Announcement
1. What is the main topic of the talk?
A) The effects of pollution on coral
B) A new method for studying marine life
C) The physical anatomy of coral reefs
D) A discovery about coral communication
2. What can be inferred about the researchers' finding?
A) It confirmed a long-held theory
B) It was an unexpected discovery
C) It has no practical applications
D) It is a controversial conclusion
Professor: A recent study in marine biology has yielded some surprising results regarding coral reefs. Researchers found that certain species of coral can actually communicate with each other chemically when threatened by predators. They release specific chemical signals into the water, which alerts neighboring corals to activate their defense mechanisms, such as retracting their polyps. This discovery suggests a much more complex and cooperative ecosystem than previously understood. It highlights the importance of chemical signaling for survival in these underwater communities.
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