The three triangular appearances of pyramid that meet at a point called the apex.pyramid has a polyhedron which is a base.
Pyramid of numbers - The factor that is considered is the quantity of life forms in each trophic level.
Pyramid of biomass- This pyramid represents to the measure of biomass of the living beings present at each trophic level. Biomass is only the weight of the organisms.
It is generally an upstanding pyramid in light of the fact that in an environment, the maker are in every case more in number than life forms in the progressive trophic levels.
This pyramid was progressed by Charles Elton (1927), who brought up the extraordinary contrast in quantities of organisms associated with each step of the food chain.