Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone. Which organ system do blood cells and blood vessels belong to? A. circulatory system B. nervous system

asked Feb 16, 2022 213k views

2 votes

by Bellu

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5 votes

Answer:

A. Circulatory system

Step-by-step explanation:

Circulatory system consist of heart,blood cells&blood vessels

Pawel Szulc answered Feb 21, 2022

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