The term "harmful toxins" refers to substances that can cause damage or harm to living organisms when they are exposed to them. These substances may be produced by plants, animals, microorganisms, or even human activities such as manufacturing and industry. Toxins can enter the body through ingestion, inhalation, or skin contact, and can have a range of effects from mild discomfort to severe illness or death. Some common examples of harmful toxins include heavy metals like lead and mercury, pesticides, and certain chemicals used in industry. It is essential to take precautions to minimize exposure to these substances and protect our health and the environment.