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    Question

    What technology was used to detect Gangetic dolphins in the

    survey?
    A Infrared Cameras Correct Answer Incorrect Answer
    B Sonar Imaging Correct Answer Incorrect Answer
    C Acoustic Hydrophones Correct Answer Incorrect Answer
    D DNA Tracking Correct Answer Incorrect Answer
    E Radio Telemetry Correct Answer Incorrect Answer

    Solution

    The survey used acoustic hydrophones to detect the sounds emitted by blind dolphins, which rely on echolocation for navigation and hunting.

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