Assess the environmental, economic, and practical trade-offs of replacing single-use plastics with biodegradable alternatives in a high school cafeteria. Students should analyze life-cycle impacts (production, use, disposal, and potential leakage), compare per-meal and annual costs, evaluate infrastructure needs (composting, collection, contamination risk), consider supply chain and durability issues, and recommend an evidence-based, feasible implementation plan with expected benefits and drawbacks.