👉 In the context of environmental science and risk assessment, "extrahazardous" refers to a substance that poses an increased risk compared to its normal or expected level of exposure. These substances are often considered hazardous because they pose a higher chance of causing harm to human health or the environment. Examples: - Benzene: A highly toxic chemical used in the production of plastics and other materials - Lead: A heavy metal that is widely used in batteries, paints, and household products - Mercury:
