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:In the diagram below illustrating farm equipment,…In the diagram below which shows the digestive tract…The diagram below is an illustration of the urinary…Which of the following substances is greater in…In the diagram of the human sperm below, the…