Paleontologists
How do you find the absolute age for something.
Radiometric Dating
How can you figure witch layer is the oldest and the youngest?
The bottom layer is the oldest cause it was there first then the very top layer is the youngest cause it means it is the most recent.
What do fossils do too help Scientists.
They can show scientists what was alive back in the past.
Fossils from ancient life.
How do scientists know that the earth is 4.6 billion years old.
Radiometric Dating