Respuesta :

MKTurner
Smallest ~ atom
Cell
Organ System Tissue (I'm assuming that's one thing and is what makes up the organ)
Largest ~ Organ
nilbert
Hi there!

From smallest to largest:

Atom, cell, organ system tissue, organ. 

Since cells are made of atoms, organ tissue is made of cells, and organs are made up of organ system tissue, this is their size. 

Hope this helps!