Final answer:
Food refers to any edible substances that humans consume, which include essential nutrients required for growth, repair, and energy. The field of study concerning these substances and their impacts on living beings is known as nutrition. To meet future dietary requirements, significant agricultural changes are needed due to the current inefficient use of crops for animal feed.
Step-by-step explanation:
Any edible substance or ingredients intended for human consumption are commonly referred to as food. This encompasses a wide range of items that provide the body with necessary materials for growth, repair, and energy. Nutrients are the molecules in food that are essential to human survival, including macronutrients like carbohydrates, fats, and proteins, as well as micronutrients like vitamins and minerals. The study of nutrients and their relationship with food and living beings is known as nutrition. With the current agricultural practices, a significant amount of human-edible crops is used for animal feed, which is an inefficient way of producing calories and proteins for human consumption. To meet the dietary needs by 2050, it's reported that we would require a 119% increase in the production of edible crops if we maintain a 'business-as-usual' dietary trajectory.