How are cells interdependent on each other?

Cells interdependent to form organization in multicellular organism to make tissue, organ, organ system and body.

Explanation:

Along the evolution process, living beings are getting particularly advanced in their complexity. The essential creature to show up was a unicellular form.  

In multicellular organisms,  cells came that together to make tissues, which collected together to shape organs, further into the organ system, at this level cell depends on one another as the complexity increases with organization level.

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