Steps. 1  1. Purchase Tincture of Iodine. Iodine is available at most drug stores in the first aid section. Buy an iodine solution with 2% iodine. 2  2. Wash and dry the affected areas. Use antibacterial soap and warm water to cleanse the ringworm site. 3  3. Apply the tincture of iodine. Iodine comes in a small glass or plastic bottle.
Excretion is important for living things because a build up of the waste products from these chemical reactions is very dangerous for the body because it can, in excess, be poisonous. Be careful though, faeces is NOT excretion.
Excretion is the process by which waste products of metabolism and other non-useful materials are 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.xcretion is an essential process in all forms of life. In mammals urine is carried out through the urethra and that is part of the excretory system. In single-celled organisms, waste products are discharged directly through the surface of the cell. Chemical structure of uric acid.