Dendrochronology and seriation give the idea of the past events around us. Therefore, option B is the correct answer.
Dendrochronology is both an old and a modern science. Just counting tree rings sounds simple, but in the context of forest dynamics tree age is an important and valuable parameter.
Calculating the years of the formation of tree gives us the idea of how old and strong that particular tree is. It is important in case of geology.
For a long time, dendrochronology was associated with the dating of old houses, paintings, and archaeological samples. In recent decades however it has become a science with a broad range of applications such as global climate change, canopy process decline, the carbon cycle, and many others.
Seriation, also called artifact sequencing, is an early scientific method of relative dating, invented by the Egyptologist Sir William Flinders Petrie in the late 19th century
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