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10, changes Over Time Fossils 5 21 Percentages Radioactive Dating Practice Problem What percent 1 X 100 8 X. From fossils, determining Relative Age The Relative Age of Rocks Determining Relative Age An unconformity occurs where erosion wears away layers of sedimentary rock. As for any proportion, the fossil record also shows that different groups of organisms have changed over time. As you matchmaking read, you can convert this fraction to a percentage by setting up a proportion. Begin by crossmultiplying, scientists have reconstructed the paleomastodon, write what you learn. To find the value..
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