Assume that the rock is sedimentary rock and that the layers have not been disturbed by earthquakes or other events.

Question

What does the existence of fossils at different layers tell you about biological evidence of evolution?

Answer 1

The existence of fossils at different layers of sedimentary rock can provide evidence of biological evolution. This is because the fossils found in each layer can show a progression of different species over time. For example, if the oldest layer contains fossils of simple organisms and the youngest layer contains fossils of more complex organisms, this can suggest that evolution has occurred and led to the development of more advanced species over time. Additionally, the presence of transitional fossils, which share characteristics of both earlier and later species, can further support the idea of biological evolution.