Heterotrophs, organisms that use prepared organic matter (usually plant or animal tissue) for their nutrition through a process known as heterotrophic nutrition. All animals and mushrooms are heterotrophs. As a result of the digestive process (as in humans), tissue breaks down, providing the body with material from which it can synthesize the necessary nutrients, such as carbohydrates, proteins, fats, vitamins and minerals.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.