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The oxygen in the air that we breathe in finally ends up in _____(i)______ and is used for _____(ii)_______.
A
(i) Alveoli, (ii) Digestion
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B
(i) Cells, (ii) Respiration
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C
(i) Cells, (ii) Digestion
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D
(i) Alveoli, (ii) Respiration
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Solution
The correct option is B (i) Cells, (ii) Respiration <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->
Oxygen that we breathe in ends up in cells. In the cells, the oxygen is used to break down the food and give energy. This process is called cellular respiration.