Rule 10%: on each trophic level of the food chain, on average about 90% of energy is lost, and only 10% goes to the next. Three types of ecological pyramids are known. The pyramid of numbers reflects the number of individuals in each link of the food chain. The biomass pyramid reflects the amount of organic matter accumulated at each trophic level of the food chain. The energy pyramid reflects the patterns of energy expenditure at different trophic levels.
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.