Weegy: Why are parasite numbers pyramids often inverted, with the bottom level smallest?
Because the flow of energy thought a trophic level and invariably shows a decrease along the food chain. Measure in unit e.g. [ J m^-2 yr^-1
:The bars are drawn in proportion to the total energy utilized at each trophic level. Also the productivity of producers in a given area measured for a standard time, and the proportion utilized by consumers ... (More)