Crystals have characteristic structures. Organisms are built up from cells. All matter can be reduced to atomic particles. Sampling allows estimations of great magnitude. All organisms in the ecosystem are connected and interdependent.
Stability is a relative term indicating constancy.
Always change, at a constant rate in a constant direction. Equilibrium, or the ability of an object to return to its starting point, reliably, after an outside force has been applied. Identifying properties of matter. The sun stabilizes the solar system. Rocks stabilize the ground matter.