asked 168k views
5 votes
Which organ systems help deliver oxygen to body cells?

A. Respiratory and excretory systems
B. Muscular and immune systems
C. Respiratory and circulatory systems
D. Endocrine and lymphatic systems

asked
User Shahadeo
by
7.6k points

2 Answers

3 votes
C. Respiratory and Circulatory Systems
answered
User Ktutnik
by
8.7k points
5 votes
C. respiratory and circulatory system
answered
User ZINE Mahmoud
by
7.9k points
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