Oceans

What did early ocean scientists use to measure the distance to the ocean floor?

More Questions from Oceans
What is the deepest point of the Philippine Trench in the western Pacific Ocean?
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The Bermuda Triangle is located within which of these oceans?
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The group of crustaceans that include crabs, lobsters and shrimps have how many legs?
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What country's appetite for fish is depleting resources in other areas?
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How many chambers does a fish heart have?
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The length of time it takes for a wave to pass a fixed point is called what?
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Which of the following characterizes the environment in which sperm whales live?
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What is the scientific family to which sea turtles belong?
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