21.3 absolute age dating of rocks

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The longest cores have helped to form a record of polar climate stretching hundreds of thousands of years back. Explain how scientists use correlation to understand the history of a region.

Radioactivity is the tendency of certain atoms to decay into lighter atoms, emitting energy in the process. Compare their protons and neutrons. Beta 1 electron One neutron decays to form a proton and an electron, which is emitted.

Earth Science: Geology, the Environment, and the Universe - In the process of radiometric dating, several isotopes are used to date rocks and other materials. How does carbon-14 end up in fossils?