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The most common directly preserved fossils are unaltered hard parts of a living organism, like shells, teeth, and bones. ... After the remains of an organism have been buried and cemented within sediment, water percolating through the sediment leaches out the fossil. This leaves a cavity in the rock, called a mold.
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the Indians and Chinese built huge realms and made numerous progresses in science, craftsmanship, and learning. These Civilizations too gave rise to unused otherworldly conventions. Two of the world's major religions (Hinduism and Buddhism) started in India
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Robert Fulton was the first to accomplish this task. By purchasing a steam engine built by James Watt, he was able to use the engine to power a 133-foot steamboat, the Clermont. In 1807, Robert Fulton's boat made a journey from New York City to Albany. By the 1830s, steamboats were the convention.
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