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hoa [83]
4 years ago
9

which system is responsible for defending the body against harmful substances? A circulatory system B muscular system C endocrin

e system D immune system
Biology
2 answers:
kicyunya [14]4 years ago
6 0
D) the immune system
balandron [24]4 years ago
3 0
D, the immune system is responsible for defending the body
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