<span>ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos.</span>
Index fossils (also known as guide
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
Answer:
No
Explanation:
Red blood cells don’t reproduce. They only survive for 120 days in our blood before they are broken down into parts that are then recycled by a special type of white blood cell.