A large quantity of one of the following is removed from our body by lungs.
(a) CO2 H2Oonly
(c) CO2 and H2O (d) ammonia
Our lungs remove large amounts of CO2 (18L/ day) and also a significant amount of water every day.
While respiration. CO2 Ammonia is highly toxic out is not found in free NH+3 form, thus it is immediately converted to a non-toxic form.