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How are casts formed by decaying organisms?

2 Answers

5 votes

Answer:

Organisms leave impressions in sediment that hardens into roc

Step-by-step explanation:

User JBradwell
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Answer:

When an organism dies and is buried between layers of mud and slit. The organism decays and hardened rock leaves an impression from where the organism was. Mineral-enriched groundwater fills the mold and it all hardens and forms the cast of the fossil.

User MichaelH
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