16.2 pyramids of biomass

what do pyramids of biomass show 

relative mass of each trophic level

what does reduced energy and biomass as you move up lead to

fewer organisms as less energy to support them

why is it better in terms of biomass instead of number of organisms eg. fox and fleas

500 fleas may be feeding on the decomposed body of a singular fox

describe what is happening to each organism

caterpillars feeding on oak tree ,blue tits feeding on caterpillars…

why is a pyramid of biomass nearly always pyramid shaped

biomass nearly always decreases as you move up