Earth
What is an underwater boat with its own power and air supply called?
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What type of boundary is displayed at the Mid-Atlantic Ridge?
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What are the bodies of water that surround the Earth's continents called?
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What event happened when water droplets were on a spider's web but it hadn't rained?
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Which of these habitats is a dry one usually with sand and can sometimes be very hot?
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If an organic material is converted into stone, it becomes what?
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Which of these might help keep erosion near a stream from happening?
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