Question

how is oxygen and carbon dioxide transported in human beings​

Answer 1

Explanation:

Oxygen is absorbed by the blood capillaries from the lungs alveoli by diffusion while carbon-dioxide is absorbed by the lungs alveoli from blood capillaries by diffusion. Transport of oxygen and carbon-dioxide occurs with the help of respiratory pigment called hemoglobin.

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Answer 2

Answer:

Via the blood... That have red blood cells which then have hemoglobin that is a pigment which contains Iron atoms that react with the oxygen and carbon dioxide...