Which aspect of hazardous materials does the hazard symbol with a skull and crossbones represent?

The hazard symbol featuring a skull and crossbones is universally recognized as a sign of serious toxicity or potential fatality. This symbol warns individuals that the substance in question can cause severe illness or death if exposure occurs, whether through inhalation, ingestion, or skin contact. It serves as a clear and immediate visual cue to handle such materials with extreme caution, emphasizing the importance of protective measures and emergency procedures when working with or around these dangerous substances. Understanding this symbol is crucial for recognizing the potential risks associated with certain chemicals or materials that may pose significant health threats.