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The Human Body. By Alyrah. T h e s k e l e t o n. The adult body has 205 bones in it. The skeleton supports your body. T h e R e s p i r a t o r y s y s t e m.
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The Human Body By Alyrah
The skeleton • The adult body has 205 bones in it. • The skeleton supports your body.
The Respiratory system You breathefaster as you use more energy. Breathing in and out is called inhaling and exhaling.
The Circulatory system The circulatory system is your heart.