It may be hard to imagine that everything around you, including you, is made up of spinning subatomic particles—protons, neutrons, and electrons. But it is true. All forms of matter can be classified in levels that increase in complexity, starting with the atom.
Directions: Watch the Levels of Organization animation to review the levels of organization, from the atom to the biosphere.
Source
Easy Science. Levels of organization. Retrieved from https://www.youtube.com/watch?v=OPQkrxmAbhg&list=PLGo--t0XAuo8kNlIDEC3izo8yR83kYRMh&index=1&noredirect=1.