Pyramids of numbers

• A pyramid of numbers shows how many organisms we are talking about at each level of a food chain. the width of the box indicates the number of organisms at that trophic level.
• a pyramid of numbers does not always have a regular pyramid shape because it does not take into account the biomass of the organisms.
• An inverted pyramid of numbers can be found in an ecosystem where the community contains a few producers with a a verry large biomass that support a larger number of smaller consumers.

  
• an inverted pyramid of numbers can also be found in an ecosystem where the community contains parasites. There can be many more parasites than the hosts they feed on because each individual parasite has a very small biomass