What are organ , organ system and organism ?

1.	What are organ , organ system and organism ?
Answer» group of tissues FORMS an organ which PERFORMS FUNCTIONS. like brain group of organs form organ system. like nervous system group of organ system forms an ORGANISM. like HUMANS

Answer»

group of tissues FORMS an organ which PERFORMS FUNCTIONS. like brain

group of organs form organ system. like nervous system

group of organ system forms an ORGANISM. like HUMANS

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