Nutrient supply refers to the availability of essential substances that organisms need to grow, develop, and maintain their health. These nutrients include carbohydrates, proteins, fats, vitamins, and minerals, which can be obtained from various sources such as food, soil, and water. A balanced nutrient supply is crucial for the proper functioning of ecosystems and human health. In agriculture, nutrient supply is vital for crop production. Farmers often use fertilizers to enhance the nutrient content of the soil, ensuring that plants like corn and wheat receive the necessary elements for optimal growth. Proper management of nutrient supply helps improve yields and sustain food security.