Question

The removal of waste substances from the body is known as

Answer 1

“Excretion”.

But some waste materials may also be removed via other secretions such as sweating,throught lacrimal fluid,through oily secretions of the sebaceous glands and by shedding of the outlayers of the skin,epidermis.(which is usually dead skin)

In invertibrates and in some other animals, it may be removed by the shedding of their exoskeleton.

Answer 2

Removal of waste substance from the body which are toxins are called excreation