The index fossils can be used to determine the age of a layer of rock and how an organism evolved over time
What is fossils?
Fossils gives geologist some information about the organism that lived in the past because when those organism dies, they decay and goes deep into the lithosphere.
What is Index fossils?
Index fossils refers to those fossils used by geologists to determine the relative age of rock strata or other fossils with ease.
The index fossils can be used to determine:
- the age of a layer of rock
- how an organism evolved over time
Hence, the Option A and C is correct.
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