posted by marco .
Use an example to describe the relationship among cells, tissues, organs, and organ systems
Do you mean analogy rather than example?
Picture a living organism as a city. The houses are cells, city blocks are tissues, residential areas could be organs as could be shopping malls. Then the organ systems would be shopping malls and residential areas interacting. The whole city interacts actually. Think of the city administration buildings. What would they be? Another complete analogy is to liken a university to a living organism.