what determines the length of a geologic time period?\n○ fossil record\n○ material density\n○ meteors and…
what determines the length of a geologic time period?\n○ fossil record\n○ material density\n○ meteors and rocks\n○ radioactive materials
Answer
Answer:
fossil record
Brief Explanations:
Geologic time periods are defined based on significant changes in the fossil record, which show the evolution and extinction of species over time.