Question

Please help.
To which 2 systems does the heart belong:
A. Circulatory system and Respiratory system
B. Circulatory system and Muscular system
C. Circulatory system and digestive system
D. Circulatory system and Reproductive system

Answer 1

Answer:

A

Explanation:

circulatoy system and respiratory

Answer 2

Answer:

A

Explanation:

;3