Eight of them. If the last xero was not significant it should not be there
Answer:
Other organic molecules such as fat and protein are also used as fuel in cellular respiration they just take a different pathway than glucose.
Explanation:
<u>Answer:</u>
The Answer is <em><u>Option D. </u></em>
<em>Exchange of respiratory gases, oxygen and carbon dioxide take place in the alveoli of the lungs. Oxygen which is inhaled from the atmosphere diffuses through the walls of the alveoli and reaches to the adjacent capillaries into the red blood cells.</em>
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