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:Which of the following organs can be considered…Which of the following regulates and controls the…When an axon is at rest, the concentration of ions…Which of the following organs in mammals is not…A hydrogen chloride gas reacted with oxygen gas to…