Sat April 05, 2014 By: Swarup Siji Singh

  1. What are living organisms made of?

Expert Reply
Sat April 05, 2014
Where cell is the basic functional unit of life, there exists a life among every individual.The cells may be single-celled or made up by many trillion of cells that are grouped into specialised tissues and organs.A group of cells forms a tissue, and a group of tissues forms an organ (heart) and groups of organs form and organ system, (nervous system) and a group of organ systems form an organism(human).
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