تحفظ (Preservation) refers to the act of maintaining and protecting something from decay, damage, or destruction. This concept is crucial in various fields, including environmental conservation, where efforts are made to safeguard natural resources and ecosystems. It also applies to cultural heritage, ensuring that historical artifacts and traditions are kept intact for future generations. In the context of food, preservation techniques such as canning, freezing, and drying are used to extend shelf life and prevent spoilage. These methods help retain the nutritional value and flavor of food, making it safe for consumption over time. Overall, preservation plays a vital role in sustaining both natural and cultural resources.