Evolution By: jonathAn g, juan b, aNgel H

Rock strata: Rock strata is layers of sedimentary rock made of individual fragments of minerals or other rocks. Over time the top gets new sedimentary rock and the bottom is the oldest sedimentary rock containing the oldest fossils at the bottom and the newer fossils at the top

Radioactive dating

Scientist have a lot of ways to find fossils age. One of them is radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.

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