Science

What tool do people at sea use to measure distance with echoes?

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In which of the following animals does the male give birth to the young?
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Which of these particles was discovered first?
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What do you call someone who studies earthquakes?
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What is the square root of 625?
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Approximately how many miles of wire are there in a 737?
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Which person is known for establishing the laws of motion and gravity?
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Which of the following items has the most mass?
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Which of these is a virus that doesn't immediately cause damage to tissue?
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