Question

how are gases exchanged during external respiration and internal respiration​

Answer 1

Explanation:

gas exchange occurs by diffusion. external external respiration occurs in the lungs where where oxygen diffuses in the blood and the carbon dioxide diffusers in the alveolor air.

internal internal respiration occur in the metabolizing tissues , where oxygen diffuses out of blood and and carbon dioxide diffuses out of cell.

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Answer 2

It occurs due to diffusion

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