Biology, 25.01.2021 16:00, zombiechick180

Which step is part of internal respiration? A. Oxygen rich Blood is taken up by the tissues
B. Air is inhaled through the nostrils
C. Air is exhaled through the nostrils
D. Gaseous exchange of oxygen and carbon dioxide occurs at the alveoli

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Which step is part of internal respiration? A. Oxygen rich Blood is taken up by the tissues
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