Toxic agents are substances that can cause harm to living organisms, including humans, animals, and plants. These agents can be found in various forms, such as chemicals, biological agents, or physical agents. Common examples include pesticides, heavy metals, and bacteria that can lead to health issues or environmental damage. Exposure to toxic agents can occur through inhalation, ingestion, or skin contact. The effects of these agents can range from mild irritation to severe health problems, including poisoning or long-term diseases. Understanding and managing toxic agents is crucial for public health and safety, as well as environmental protection.