JAMB - Biology (2006 - No. 2)
The product of excretion common to the mammalian kidney, lung and skin is
mineral salt
carbon (IV) oxide
water
urea
Explicació
Water is a product of excretion common to the kidneys, lungs, and skin in mammals, although it is excreted in different forms and quantities by each organ.
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Kidneys:The kidneys excrete water as a component of urine, along with other waste products like urea and salts.
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Lungs:The lungs excrete water in the form of water vapour during exhalation, along with carbon dioxide.
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Skin: The skin excretes water through sweat, which also contains salts and other waste products.