Question

Fossils can usually be found in layers of

chronological order
radioactive dating
common ancestry
sedimentary rock
fossil record
metamorphic rock
nitrogen dating
timeline

Answer 1

Sedimentary rock dhidudidif

Answer 2

Sedimentary rock

Step-by-step explanation:

All fossils are sedimentary rock. When an organism dies, layers of sediments pile on top of the organism, the sediments harden to become sedimentary rock. And for this reason, fossils cannot be igneous or metamorphic rock.