A cast forms when minerals fill the hollow space of a mold. Therefore, the correct answer is:
A. Minerals fill the hollow space of a mold.
A cast is a type of fossil. How does a cast form?
A.
Minerals fill the hollow space of a mold.
B.
The organism is trapped in a protective material, such as ice or tree sap.
C.
The organism leaves a footprint in sediment.
D.
Minerals gradually fill the spaces within a dead, decaying organism.
1 answer
1 answer