The interaction of organisms with the environment is manifested not only in the fact that organisms take from the environment everything necessary for life, but also in the fact that they return substances into the environment – the products of their vital activity.
• aerobes in the process of breathing return carbon dioxide to the environment;
• autotrophs – a by-product of photosynthesis – oxygen.
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.