The diagram below is an illustration of the urinary tubule in a mammal. The part which contains the lowest concentration of urea is labelled? by Sunday | Nov 16 | Biology WAEC | 0 comments A. I B. II C. III D. IV Correct Answer: Option C C. III Users Also Read These:When a person’s urine contains a high concentration…The diagram below is an illustration of the urinary…The diagram above illustrates a part of the human…The diagram below illustrates the digestive tract of…The diagram below is an illustration of human sperm.…