what I found challenging in Nutrition is animals
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Answer:
High availability of low-cost foods and beverages that are also high in calories, fat, salt and sugar. Very powerful food marketing that particularly impacts children. Nutritional information that is difficult to understand and apply. Nutritious foods that are difficult to access for certain segments of the population.
Food nutrients are used as an animal's primary source of energy through a variety of processes, including digestion and absorption in the digestive tract, blood transport, and cell metabolism. The functioning of numerous tissues and organs in animals are linked to the regulation of animal nutrition.
Low-cost foods and beverages that are also rich in calories, fat, salt, and sugar are widely available. Foods that are nutritious but difficult to obtain for some portions of the population.