Final answer:
Renal K+ wasting can occur in conditions such as renal failure, severe dehydration, and Addison's disease.
Step-by-step explanation:
Kidneys play a crucial role in regulating potassium (K+) levels in the body. Under certain circumstances, excessive loss of K+ through urine, known as renal K+ wasting, can occur. This can happen in conditions such as renal failure, severe dehydration, and Addison's disease.