In this lesson for ninth-grade students, the focus is on health and safety hazards associated with waste disposal, building on previous learnings about different types of waste. Students learn about four ways to protect themselves from hazardous substances when discarding waste, particularly in environments where contamination may occur, such as food waste or chemical exposure. The lesson emphasizes the importance of wearing gloves to prevent skin absorption of toxins, recognizing harmful fumes while inhaling, and avoiding ingestion of contaminated food. Overall, the session aims to instill awareness of health risks associated with improper waste management and the necessary precautions to take.