Sunday, October 30, 2011

(I)GCSE 2.67 b) Human Organs of Excretion



- Lungs, kidneys, and skin are organs of excretion. 
- Lungs excrete Carbon-dioxide
- Kidneys excrete Excess Water; Molecule Urea - hydrogen waste from amino acids; Salts 
- Skin excretes Water and Salts through sweat; Urea
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