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.

Respuesta :

Answer:

D.Impressions left by organisms are filled in with sediment that hardens into rock.

Answer:

d

explanation: took the test