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 part of the kidney tubule where ultra filtration…In the diagram of the human sperm below, the…The diagram below is an illustration of the urinary…The part labelled III in the diagram below is the…The diagram below illustrates the digestive tract of…