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The test was carried out in a laboratory at the University of Oxford.

The result places the leaves close to the time of the Prophet Muhammad, who is generally thought to have lived between AD 570 and 632.

Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify.

The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process.

Example: analyzing changes in tree growth patterns via tree rings to date a series of landslide events.

By examining the spacing of perikymata grooves (horizontal growth lines), the duration of the stressor can be estimated, although Mays argues that the width of the hypoplasia bears only an indirect relationship to the duration of the stressor.In England and other European countries, the term 'bioarchaeology' is borrowed to cover all biological remains from sites.Bioarchaeology was largely born from the practices of New Archaeology, which developed in the US in the 1970s as a reaction to a mainly cultural-historical approach to understanding the past.Enamel hypoplasia refers to transverse furrows or pits that form in the enamel surface of teeth when the normal process of tooth growth stops, resulting in a deficit of enamel.Enamel hypoplasias generally form due to disease and/or poor nutrition.

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