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O Level Biology MCQ App Download | Circulatory system Apps (Android & iOS)

O Level Biology MCQ: Complete Course

Circulatory system MCQ App Download & e-Book | 15

Apps:

O Level Biology App (Play Store) O Level Biology App (App Store)
MCQ: 15

Pulmonary veins carry

  1. red oxygenated blood
  2. bluish red deoxygenated blood
  3. deoxygenated blood from heart to the lungs
  4. oxygenated blood from lungs to heart

O Level Biology App & e-Book Tests PDF Download

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