Consumers – heterotrophs, organisms that consume ready-made organic substances created by autotrophs (producers). Unlike reducers, consumers are not able to decompose organic substances into inorganic ones. Consumers include animals, some microorganisms, as well as parasitic and insectivorous plants. Consumers of the first, second and other orders are classified, since at each stage of the transfer of matter and energy in the trophic chain, up to 90% is lost. Ecological pyramids rarely consist of more than four orders of consumers.
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.