Final answer:
Ice used in food processing must be made from potable water to maintain food safety standards and prevent contamination. Ice must be made from potable (safe to drink) water for food processing operations. This is because impurities and contaminants in non-potable water can affect the quality and safety of the food being processed.
Step-by-step explanation:
True, ice must be made from potable water for food processing operations to ensure the safety and cleanliness of the food supply. In food processing, ice is often in direct contact with food products, and using non-potable water could introduce harmful contaminants that pose a risk to public health. Moreover, the properties of ice as less dense than liquid water and its role in freezing processes are important for understanding various phenomena, such as the freezing of bodies of water from the top down, which has significant implications for aquatic life.