Question

how did scientists date fossils and artifacts?

Explanation:

There are several methods. Relative dating compares the position of fossils and artifacts in rock layers. Radiometric dating uses the decay of radioactive isotopes like carbon - 14 for organic materials to determine age. Stratigraphy studies rock layers to establish a chronological sequence.

Answer:

Relative dating, radiometric dating, stratigraphy are some of the methods used by scientists to date fossils and artifacts.