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
Question
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
Solution
The answer is index fossils. Index fossils come from organisms that lived during a relatively short, well-defined time period. They are used in the relative dating of rocks because they can indicate the age of the layers of rock in which they are found. If the same index fossil is found in different areas, it suggests that the layers of rock formed during the same time period.
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