Which description best matches democritus idea of the atom

answer:

explanation:

around 400 b.c.e., the greek philosopher democritus introduced the idea of the atom as the basic building block matter. democritus thought that atoms are tiny, uncuttable, solid particles that are surrounded by empty space and constantly moving at random.

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).

a) the particles of the chair are strongly held together.