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:The diagram below is an illustration of farm…Which of the following substances is greater in…From the illustration of farm implements below, the…The diagram below is an illustration of human sperm.…When a person’s urine contains a high concentration…