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| A Hike on the Beach | |||||||||||||||
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|  Current Step: | Welcome to Another Hike! | ||||||||||||||
| Today we are going to take a wonderful hike along the beach on the central Oregon coast. The air is brisk with a steady ocean breeze. The sand is smooth and warm, littered with thousands of small shells and pebbles that glisten in the sunshine.
 
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 It appears that there are two provisional explanations that we could propose for the existence and properties of this object: 
 
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