How is relative-age dating used to determine the ages of fossils?

Answer 1

Relative-age dating is used to determine the ages of fossils by comparing the positions of the fossils in the rock layers. Fossils found in lower layers are usually older than fossils found in higher layers. This is because the lower layers were deposited first, and the higher layers were deposited later. By comparing the positions of the fossils in the rock layers, scientists can determine the relative ages of the fossils.