The table below shows the fossils found in various layers of an undisturbed rock:
fossils in rock layers
layer (from top) fossil in layer
1 a, c
2 e
3 a, d, f
4 b
5 f, c
6 d, b
which is most likely an index fossil?
a
b
d
e

the cell cycle is the final answer! : )

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .