Answers

2015-06-24T10:42:01+05:30
Respiratory system is a body organ system which helps in the process of respiration.
respiration is a process in which our body uses the food to synthesise energy from it.
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2015-06-25T17:21:02+05:30
Respiratory system is a organ system in our body.It helps to break down food to release energy................
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