Which of the following do archaea and bacteria have in common?

they both use a special form of rna polymerase to transcribe their dna.

they both are commonly found on human skin.

they both make chitin in order to reinforce their cell membranes.

they both keep their dna in the form of a nucleoid.

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.