Organic material in sediment layers can be dated by measuring the amount of radioactive ________ present.

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Organic material in sediment layers can be dated by measuring the amount of radioactive carbon-14 present. The carbon-14 dating technique is widely used by scientists to determine the age of materials containing carbon-based substances. As carbon-14 decays over time, by comparing the amount of carbon-14 in a sample with the initial amount of carbon-14, an estimate of the sample's age can be calculated.

Organic Material in Sediment Layers Can Be Dated by Measuring