Toxic compounds are substances that can cause harm to living organisms, including humans, animals, and plants. These compounds can be found in various forms, such as chemicals, heavy metals, and certain natural substances. Exposure to toxic compounds can lead to health issues, including poisoning, organ damage, and even death, depending on the level and duration of exposure. Common sources of toxic compounds include industrial waste, pesticides, and pollutants in the environment. Some well-known toxic compounds are lead, mercury, and arsenic. Understanding the risks associated with these substances is essential for protecting public health and the environment.