Which layer of the
earth has the greatest
density? Why?

The inner core has the highest density

Explanation:

Despite high temperatures should be melting the metals in the inner core, the extreme pressure keeps the earth's inner core in a sold phase. The solid metals make the earth's core very dense, at about 17 g/cm³

metal inner core

Explanation:

It is made of the densest components & it is under the greatest compression; due to the overlying layers.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy