Defintion of dating
There are two main categories by which they do this: relative age dating and absolute age dating.In relative age dating, scientists study a material and compare it to other similar materials in order to establish a timeline.
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Scientists can take very accurate readings using this method, often to the exact calendar year.
Amino acid dating: This method is useful when determining the age of a material that was once alive. By counting the amounts of certain amino acids, scientists can determine how long ago the specimen died.
In absolute age dating, scientists determine the age of Earth materials as precisely as possible.
Many scientists prefer the term calendar dating, as it implies that ages determined can be plotted on a calendar.