The geologic time scale goes back 4.6 billion years. During that time, we have used fossil records to piece together the history of life on Earth as well as other events, such as climate changes and plate movements. Studying the fossils found in different rock layers can tell us which organisms existed together and in what order they lived.
Which statement best describes the changes in the environment in this location?
A.
Multiple layers of fish fossils indicate that the environment has always been a marine environment.
B.
Fish and insect fossils in the same layer indicate a change from a land environment to a marine environment.
C.
Dinosaur fossils over fish fossils indicate a change from a marine environment to a land environment.
D.
Insect fossils under dinosaur fossils indicate the environment has always been a land environment.
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The statement that best describes the changes in the environment in this location is:
C. Dinosaur fossils over fish fossils indicate a change from a marine environment to a land environment.
This option suggests that the presence of dinosaur fossils, which are terrestrial creatures, above fish fossils, which are aquatic, indicates a shift in the environment from sea to land over time, aligning with the understanding of the geologic time scale and the evolution of life.
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