Respiration occurs a. on the internal level only. b. independent of cellular activity. c. externally and internally. d. on the external level only.

The answer is option B.

Explanation:

Breath isn't indistinguishable thing from relaxing. That is all the more appropriately called ventilation. Rather, breath is a compound procedure in which vitality is discharged from sustenance substances, for example, glucose - a sugar. Vigorous breath needs oxygen to work.When you inhale, you are taking in oxygen with each breathe in and discharging carbon dioxide with each breathe out. Breath is the biochemical procedure in which the cells of a living being get vitality by consolidating oxygen and glucose, bringing about the arrival of carbon dioxide, water, and ATP

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