Question

what is excretion ??????​

Answer 1

The process of removal of unwanted substances like nitrogenous wastes out of the body is called excretion.

Answer 2

Excretion is a process by which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. Excretion is an essential process in all forms of life.