how do index fossils help scientists? they ai...
how do index fossils help scientists? they aid in the study of ranges of different organisms. they advance understanding of the origin of life on earth. they aid in comparison of rock layers at distant locations. they advance understanding of rock type at the time the organism lived.
Answer
# Brief Explanations:
Index fossils are fossils that are used to date the rock layers in which they are found. They are widespread geographically but limited in time - range. By finding the same index fossil in different rock - layers at distant locations, scientists can correlate those rock - layers and determine their relative ages.
# Answer:
They aid in comparison of rock layers at distant locations.