Question

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.

Answer 1

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.

Answer 2

Answer:

D.

Explanation: