Describe briefly two methods of determining the age of fossils
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→ The fossils can also be dated by detecting the ratios of different isotopes of the same element in the fossil material.
→ This process is known as radiocarbon dating. When living organisms change into fossils, their rate of radioactive C14 decay decreases slowly.
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Scientists combine several well-testedtechniques to find out the ages of fossils. The most important are Relative Dating, in which fossils and layers of rock are placed in order from older to younger, and Radiometric Dating, which allows the actual ages of certain types of rock to be calculated.
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