Answers

  • psj
  • Ambitious
2015-11-28T15:45:07+05:30
When you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity, into which your lungs expand.
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2015-11-28T16:06:12+05:30
When u inhale air the diaphragm contracts and moves down. This provides space in chest cavity and makes lungs expand. Hope I helped u. Plz mark as the BRAINLIEST answer.
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