Earth

What is petroleum as found in the earth, before it is refined?

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What is another name for continental glaciers?
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Which tree can grow the tallest?
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How cold does it need to be outside before it can snow?
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When is Earth day every year?
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What is the system consisting of the Earth's sun and the eight planets orbiting it called?
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Which of the following describes a period of abnormally dry weather for a specific area?
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Which of these is not a group of modern desert?
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Earth is the ______ planet from the sun?
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