Diagram of the layers in a sandwich.
Rights: The University of Waikato Te Whare Wānanga o Waikato Published 11 May 2011 Size: 140 KB Referencing Hub media

Next time you have a sandwich, use the principles of relative dating to work out the order it was made in.

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    Relative dating

    Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence. The method of reading the order is called stratigraphy (layers of rock are called strata) ...

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