Excretion is elimination of metabolic waste, which is an essential process in all organisms. In vertebrates, this is primarily carried out by the lungs, kidneys, and skin. [1]

Dec 3, 2025 · Excretion is a general term referring to the separation and throwing off of waste materials or toxic substances from the cells and tissues of a plant or animal.

Some human body wastes are gases, some are solids, and some are in a liquid state. Getting rid of body wastes is called excretion, and there are a number of different organs of excretion in the human …

Nov 28, 2025 · Excretion is the biological process by which organisms eliminate metabolic wastes such as urea, ammonia, CO₂, excess water, and salts. Humans excrete waste through kidneys, lungs, …

Nov 20, 2025 · Excretion is the process by which an organism removes the waste products generated by its metabolism. These wastes are chemical by-products of cellular activity, such as the breakdown …

Apr 17, 2019 · Excretion is the process that biological organisms use to expel or eliminate the waste products produced by their metabolisms.

Excretion is a biological process that removes waste products from living organisms. These wastes are byproducts of metabolic activities within cells. Removing these substances is essential for …