Final answer:
Trace fossils can help us understand an organism's activity during its lifetime by providing evidence of ancient behaviors and movements.
Explanation:
Fossils are the remains of organisms preserved in the environment. To understand an organism's activity during its lifetime, one type of fossil that can help is trace fossils. These fossils provide evidence of the activities of ancient organisms, such as footprints, burrows, or nests. By studying trace fossils, scientists can infer behaviors and movements of organisms in the past.
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