Answer:
What is the DIFFERENCE between EXCRETION and ELIMINATION? ... EXCRETION refers to the REMOVAL of METABOLIC WASTE produced in the BODY. ELIMINATION refers to the REMOVAL of INDIGESTIBLE MATERIAL. Most of the BODY'S ACTIVITIES produce METABOLIC WASTES that MUST be REMOVED.
Explanation:
Sodium ions help control blood flow, blood volume, osmotic balance, and pH.