5.LS4.1 Fossils

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What are fossils?

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Fossils are the preserved remains or traces of ancient organisms, often found in sedimentary rock.

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What is a body fossil?

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A body fossil is a part of the actual organism, such as bones, teeth, or shells.

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What is a mold fossil?

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A mold fossil is an impression left in the ground by an organism, showing its shape.

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What is a cast fossil?

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A cast fossil is a filled-in mold, where minerals fill the impression and create a replica of the organism.

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What are trace fossils?

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Trace fossils are evidence of an organism's activity, such as footprints, burrows, or bite marks.

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Why are deserts good places to find fossils?

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Deserts are dry environments where bacteria and decomposers cannot thrive, allowing fossils to be preserved.

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What is permineralization?

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Permineralization is a process where minerals fill the spaces in organic material, turning it into fossil.

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What does extinct mean?

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Extinct means that a species no longer exists; all members of that species have died out.

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What is the significance of fossils in understanding Earth's history?

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Fossils provide evidence of past life forms and help scientists understand the evolution of species and changes in environments.

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How do fossils form?

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Fossils form when organisms are buried quickly after death, preventing decay and allowing for preservation.