Earth

What is an underwater boat with its own power and air supply called?

More Questions from Earth
Red sky in morning, sailors take what?
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There are over one quadrillion of what animal on Earth?
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Which of these is not a type of coral-reef shoreline?
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What piece of material attracts iron and some other metals?
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What is the destruction of forests called?
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What does granite become when put under heat and pressure?
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What plant's gel is often used in lotions and sunblocks?
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From what perspective does a map shows what the earth looks like?
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