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:From the illustration of farm implements below, the…In the diagram of the human sperm below, the…The diagram below illustrates the digestive tract of…Which of the following substances is greater in…In the diagram below which shows the digestive tract…