What happens to the density of the layers as you move from the crust to the inner core? which layer is the densest?

The layers will be denser as you move from the crust to the inner core.

The density are as the following:

crust (2.55 g/cm³)
upper mantle (3.9 g/cm³)
lower mantle (5 g/cm³)
outer core (11.05 g/cm³)
inner core (12.95 g/cm³)

Thus we can also see that the inner core is the densest layer.

Hope it helps!

Ibelieve it would be religious 

Had a democratic form of government