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What provides evidence of past life on Earth?
Fossils
What is a fossil?
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Has the landscape you live in always looked the way it does now?
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How can shark teeth be found 100 miles away from the ocean?
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How can shark teeth be found 100 miles away from the ocean?
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Does the Earth change or stay the same over time?
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What kinds of evidence supports the idea that the landscape at Sharktooth Hill was once under the ocean?
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Why is it possible to find ancient fossils right at the Earth’s surface?
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Is there any evidence that a volcano caused all the animals to die here?
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What is the current understanding of how the fossil bone bed at Shark Tooth Hill formed?
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How do the rock layers above and below the bone bed compare in age?
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Where would you look for evidence of what it was like before the bone bed formed?
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How did the bones in the Sharktooth Hill bone bed become jumbled up?
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How do we know the central part of the United States was once covered by the ocean?
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