Earth

What type of energy sources can't be replaced readily within a 30-year span?

More Questions from Earth
Which north direction is the geographic meridian plane?
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The Earth's atmosphere lies just above what part of its composition?
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What breaks when its height is 3/4 of its depth?
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What is a reason for the Earth's seasons?
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What is the study of plant life called?
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Which of these planets is smaller than Earth?
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What type of glaciers fill up the gaps between mountains?
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The Appalachian Mountains are best described as what type of mountains?
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