´╗┐Biomass is the billions of killograms of organic material manufactured by the Earth's producers.
Primary productivity is the rate at which producers in an ecosystem build biomass.
The energy pyramid (food pyramid) emphasizes the energy loss from one trophic level to the next.
A biomass pyramid represents the actual biomass (dry mass of all organisms) in each trophic level in an ecosystem.
A Pyramid of numbers depicts the number of individual organisms in each trophic level in an ecosystem.

Energy Pyramid:
xfoodchains.gif


Biomass Pyramid:
biomass-upright-pyramid_jpeg.jpg


Pyramid of Numbers:
fc8_352_tcm9-96739_v1.gif