Final answer:
Excretion is the process of eliminating unnecessary or potentially harmful materials from the body. It involves removing waste products and excess water to maintain homeostasis.
Step-by-step explanation:
Excretion is the process of eliminating unnecessary or potentially harmful materials from the body. It involves removing waste products and excess water to maintain homeostasis. The excretory system, which consists of organs such as the kidneys, large intestine, liver, skin, and lungs, is responsible for carrying out excretion.