Question

fossils can be dated using which of the following? select all that apply.
□ relative to other fossils found in layers of rock
□ a method called radiometric dating
□ by dating the rock in which they are discovered
□ by using a microscope to examine tissue
□ by dating the rock layers directly above and below the fossil

Explanation:

• Relative dating uses rock layer positions of fossils.
• Radiometric dating measures radioactive isotope decay in fossils/rocks.
• Fossils' age matches their host rock's age.
• Dating adjacent rock layers brackets the fossil's age.
• Microscopes examine tissue but don’t date fossils.

Answer:

relative to other fossils found in layers of rock, a method called radiometric dating, by dating the rock in which they are discovered, by dating the rock layers directly above and below the fossil