CAIE IGCSE Biology 13.1.1 Carbon dioxide is excreted through
CAIE IGCSE Biology 13.1.1 Carbon dioxide is excreted through
Practise recognising carbon dioxide as a waste product removed by the lungs and separating it from urine-based excretion in humans.
How this is tested
- state carbon dioxide as the gas excreted by the breathing system
- distinguish lung excretion of CO2 from kidney excretion of urea and water