Exchange of matter and energy with the environment: living beings feed, plastic and energy metabolism are based on this, maintain a constant internal environment – homeostasis and release waste products into the environment. In the non-biological cycle of substances, they are simply transferred from one place to another or their state of aggregation changes: for example, washing away the soil, turning water into steam or ice.
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.