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Botany A group of Tasmanian botanists have claimed that a King's holly shrub, the only one of its species in the

world, is also the oldest living plant. Using carbon-14 dating of charcoal found along with fossilized leaf fragments, they arrived at an age of 43,000 years for the plant, whose exact location in south- west Tasmania is being kept a secret. What percent of the origi- nal carbon-14 in the charcoal was present?

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