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 elimination to waste products from. the body. Waste products are unwanted and toxic by-products. which are removed to maintain homeostasis and. protect the body from their toxicity, e.g., jaundice in. case of bile pigments, uremia in case of urea. Waste products (which do not accumulate in the body) are nitrogenous materials, CO.