Which of the following organs regulates the levels of water, salts, hydrogen ions, and urea in the mammals? by Sunday | Sep 5 | Biology JAMB | 0 comments A. Kidney B. Colon C. Bladder D. Liver Correct Answer: Option A – Kidney Users Also Read These:When an axon is at rest, the concentration of ions…Methanoic acid mixes with water in all proportions…Which of the following regulates and controls the…In which of the following transitions is the largest…Which of these organs can be considered vestigial in…