Fossils

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What are fossils?

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Fossils are remains or traces of ancient living things that are preserved in rock.

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How do fossils help us?

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They help us learn about creatures that lived long ago and how life on Earth has changed over time.

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What conditions are necessary for fossil formation?

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Organisms must contain hard parts such as bones, teeth, cartilage, or shells, and must be buried quickly in an oxygen-free environment protected from scavengers.

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What is a mold fossil?

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A mold fossil is the imprint left by the organism on the rock that surrounded it.

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What is a cast fossil?

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A cast fossil is when an imprint fills in with minerals from water and sediment and hardens to form a fossil.

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What are true form fossils?

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True form fossils are when the actual remains or body parts of an ancient organism are preserved, such as bones, teeth, shells, and sometimes entire creatures like insects trapped in amber.

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What are trace fossils?

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Trace fossils are evidence of the activity of ancient organisms, providing insights into their behavior and movement, such as footprints, burrows, nests, and droppings.

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Why are fossils important to scientists?

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Fossils help scientists understand the history of life on Earth, providing clues about past environments, climates, and the evolution of different species.

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Which type of fossil is pictured?

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A mold fossil is pictured.

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Which type of fossil is pictured?

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A trace fossil is pictured.