an fossil is specific to a certain time period, which allows scientists to determine the age of the rock it…

an fossil is specific to a certain time period, which allows scientists to determine the age of the rock it is in.

an fossil is specific to a certain time period, which allows scientists to determine the age of the rock it is in.

Answer

Answer:

index

Brief Explanation:

Index fossils are specific to certain time - periods and help in rock - age determination.