Earth

What activity allows humans to go underwater with oxygen tanks and a wetsuit?

More Questions from Earth
What is a seven-letter word meaning "movement of weathered material from gravity"?
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What country forms a 2000-mile archipelago along the east coast of Asia?
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What percentage of the earth's water is drinkable?
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What instrument do you use to measure wind speed?
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What type of satellites are always in the same spot in Earth's orbit?
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What is the weather phenomenon known as a "tsunami"?
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What branch of science deals with fossils of living things?
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What was the name of the August 2005 hurricane that damaged New Orleans?
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