of original isotope found in the rock. The absolute age of a specimen (fossil) or rock is

Describe how we use radioactive elements and their decay products to find the age of a rock sample. Is this necessarily the age of the entire world from which the sample comes? Explain.

Scientists can estimate the ages of rock if they contain certain __________. A. sediments B. carbons C. minerals D. index fossils

Age of fossil may be found out by determining the ratio of two isotopes of carbon. The isotopes are

Scientists can use    dating to figure out the absolute age of fossils. Word Bank:radiometricsuperpositionrelativeBlank 1:

18. Which of the following come from types of organisms that lived during only a relatively short period of time and are used to determine the relative age of rocks? imprints index fossils trace fossils extrusions