HELP FAST! PLEASE
This is due in 4 hrs Ah

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?

What do all types of steel have in common a: all alloys are made mostly of iron b: all are ionic compounds made from iron and nonmetals c: all are alloys that contain either iron, aluminum, or copper d: all are alloys made mostly of nonmetals

Complete the table by filling in the missing information.