charge, like mass, is also fundamental property of matter. Inside atoms found in matter, between positive and negative charges holds the atoms
together.

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).