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Class 9 Biology Quiz Book PDF Download | Pulmonary and Systemic Circulation App

Class 9 Biology Learning Guide: Certification Test 1372

Pulmonary and Systemic Circulation Quiz App & e-Book: MCQ 1372

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MCQ: 1372

The time for ventricular systole in one heartbeat is

  1. 0.3 seconds
  2. 0.9 seconds
  3. 0.8 seconds
  4. 0.6 seconds

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Pulmonary and Systemic Circulation Learning Guide: Class 9 Biology App & eBook Quiz

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9th Grade Biology Quiz App (Android & iOS)

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