1. Carbon Dioxide (CO2): A waste product of cellular respiration, CO2 is primarily excreted through the lungs during breathing.
2. Urea: A nitrogenous waste product formed from the breakdown of proteins, urea is filtered from the blood by the kidneys and excreted in urine.
3. Water (H2O): Water is essential for bodily functions, but excess water is also excreted through the kidneys in urine, skin through sweat, and lungs through exhaled breath.
4. Electrolytes: Minerals like sodium, potassium, and chloride are essential for various bodily processes. However, excess electrolytes are regulated and eliminated through the kidneys in urine and sweat.
Let me know if you'd like to know more about how any of these chemicals are excreted!
