Biology 0610 · IGCSE · Gas exchange in humans

Gas exchange in humans — practice question

The diagrams indicate the depth and rate of breathing in a person at 12:00 and 13:00. What change occurs in the person’s breathing between 12:00 and 13:00?

  • Adepth decreases; rate decreases
  • Bdepth decreases; rate increases
  • Cdepth increases; rate decreases
  • Ddepth increases; rate increases

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