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:A hydrogen chloride gas reacted with oxygen gas to…When an axon is at rest, the concentration of ions…Which of these organs can be considered vestigial in…In which of the following transitions is the largest…What quantity of electrons (in mole) is lost when…