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 physical process of eliminating waste, especially in a living organism. If you think about it, excretion keeps plumbers in business. In a human, there are three organs that mostly take care of excretion, or ridding the body of substances it doesn't need: lungs, kidneys, and skin.