Question

ordering question click and drag on elements in order place the levels of structural hierarchy in the body in order of complexity, from the smallest/simplest at the top to the largest/most complex at the bottom. instructions atom cell organ tissue organ system organism

Explanation:

In biological organization, atoms are the simplest units. Cells are made up of atoms and molecules. Tissues are groups of similar cells. Organs are made up of different tissues. Organ - systems are groups of organs working together. An organism is the most complex, consisting of multiple organ - systems.

Answer:

Atom, Cell, Tissue, Organ, Organ system, Organism