Toxicity refers to the degree to which a substance can harm living organisms. This can include chemicals, plants, or even certain types of bacteria. For example, some poisonous mushrooms can cause serious illness if ingested, while heavy metals like lead can lead to long-term health problems. Understanding toxicity helps us avoid harmful substances and protect our health. In a broader sense, toxicity can also describe harmful behaviors or attitudes in social settings. For instance, a toxic relationship may involve manipulation or constant criticism, which can negatively impact mental well-being. Recognizing and addressing toxicity in our lives is essential for fostering healthier environments and relationships.