Final answer:
A trace fossil is evidence of an organism's activity preserved in rocks, such as a footprint of an extinct animal.
Step-by-step explanation:
A trace fossil is evidence of an organism's activity that has been preserved in the rocks. An example of a trace fossil is a footprint of an extinct animal. Footprints can provide information about the size, behavior, and locomotion of the animal that made them. Other examples of trace fossils include burrows, tracks, and nests.
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