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{:(,"Organ",,"Elimination"),(1.,"Skin",a...

`{:(,"Organ",,"Elimination"),(1.,"Skin",a.,"Urine"),(2.,"Lungs",b.,"Sweat"),(3.,"Intestine",c.,"Carbon dioxide"),(4.,"Kidneys",d.,"Undigested food"):}`

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The correct Answer is:
1. - (b), 2. - (c), 3. - (d), 4. - (a)
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