Answer:wash your hands off
Explanation:even though you wipe it with a paper towel the germs still not gone
Not having your germy hands on people's food.
Iodine solution is used to test leaves for the presence of starch. You need to: heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions) heat it in boiling ethanol for a few minutes (this removes most of its colour)