question_answer 16)

  A large quantity of one of the following is removed from our body by lungs. (a) only                    (b) only                         (c)  and               (d) ammonia

Answer:

                  (c) Our lungs remove large amounts of (18L /day) and also significant amount of water everyday. While respiration,  alone can not be eliminated from the body and the same holds true for . Ammonia is highly toxic, out is not found in free  form, thus it is immediately converted to non-toxic form.