Carbon dioxide is a waste byproduct of cellular respiration. This is removed out of the body by the .
A
lungs
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B
kidney
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C
heart
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D
skin
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Solution
The correct option is A lungs Carbon dioxide is produced during cellular respiration. This is not required by the body. So, it is collected by the blood from all the cells and is finally excreted out by the lungs through exhalation.