What are the three types of ecological pyramids? What information is conveyed by each pyramid with regard to structure, function, and energy in the ecosystem?

(N/A) The three types of ecological pyramids are:
$1$. Pyramid of Number: It represents the number of individual organisms at each trophic level in an ecosystem.
$2$. Pyramid of Biomass: It represents the total dry weight (biomass) of living organisms at each trophic level.
$3$. Pyramid of Energy: It represents the total amount of energy available at each trophic level.
Information conveyed:
- Pyramid of Number: Provides information about the population size of producers and consumers. It can be upright or inverted (e.g., in a tree ecosystem).
- Pyramid of Biomass: Provides information about the standing crop or total organic matter. It is generally upright in terrestrial ecosystems but can be inverted in aquatic ecosystems (e.g., phytoplankton biomass is less than zooplankton biomass).
- Pyramid of Energy: It is always upright because energy flow is unidirectional and follows the $10\%$ law of Lindeman, where energy is lost as heat at each transfer. It provides information about the functional efficiency of the ecosystem.