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ExamsNEETBiology

When CO₂ concentration in blood increases, breathing becomes

  1. (a) shallower and slow
  2. (b) there is no effect on breathing
  3. (c) slow and deep
  4. (d) faster and deeper

Correct answer: (d) faster and deeper

Solution

When CO₂ concentration in blood increases, the body responds by increasing breathing rate to expel the excess CO₂.

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