mydhurt mydhurt
  • 07-11-2020
  • Biology
contestada

(please help me )
The heart and blood vessels together comprise a/an

A. tissue.
B. organ.
C. organ system.
D. organism.

Respuesta :

delohunter1 delohunter1
  • 07-11-2020

Answer:

C. Organ System

Explanation:

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