1) Producers – organisms that produce organic matter from inorganic (plants, cyanobacteria).
2) Consumers – consumers of finished organic matter (herbivorous, omnivorous, carnivorous animals).
3) Reducers – organisms that mineralize organic substances (fungi, bacteria).
4) Inanimate components – solar energy, soil, water, atmosphere (energy source, living environment, carriers of matter)
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.