How are casts formed by decaying organisms? Organisms turn into rock over time. Organisms leave carbon residue on a rock. Organisms leave impressions in sediment that hardens into rock. Impressions left by organisms are filled in with sediment that hardens into rock.
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Answer:
Impressions left by organisms are filled in with sediment that hardens into rock.
Explanation:
- When an organism dies on a rock, salt, mud or silt, the sediments become harder over a period of time.
- The body of the organism decomposes but leaves behind its imprint on the rock as it remain placed on the rock for such a long period of time.
- In this way, casts are formed on rocks.
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Answer:
D.
Explanation:
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