Video Details

Fossils: Cast

Grade Levels: 3 - 12
Length: 00:00:04
Website: http://www.uen.org/emedia
Usage rights: Download and retain personal copies in perpetuity.

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When a plant or animal is buried by sediment, it decays over time and leaves a space. A cast is formed when this space is filled by sediments or minerals that harden over time.

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EMEDIA

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