독 (Poison) refers to any substance that can cause harm or illness when introduced into the body. It can be found in various forms, including liquids, solids, and gases. Poisons can originate from natural sources, such as certain plants and animals, or be man-made, like chemicals used in pesticides. The effects of poison depend on the type, amount, and method of exposure. In nature, many organisms produce 독 as a defense mechanism. For example, some species of frogs and snakes use毒 to deter predators. In medicine, certain poisons are studied for their potential therapeutic effects, leading to the development of treatments for various diseases.