Multiple choice

These are formed when molds become filled with minerals

  1. Casts

  2. Index Fossil

  3. Carbon Films

  4. Trace Fossils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A cast is a type of fossil formed when a mold (an impression left by an organism) is filled with sediment or minerals that harden over time. This creates a replica of the original organism's shape.

Keep practicing — related questions