Earth

What fuel comes from the remains of 300-million-year-old decayed fern plants?

More Questions from Earth
What is the natural process by which rocks break down into smaller chunks?
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Which pairs of minerals are almost always found together?
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What is mining near the Earth's surface called?
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Which of these is another name for dirt?
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What natural disaster is said to be 100 times greater than an atomic bomb?
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Which is the process of placing plants in a certain way in an area?
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What forms when water condenses in the Earth's atmosphere?
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What type of power did the ancient Persians use to grind grains?
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