Explain the ecological pyramid of numbers in the ecosystem?

It is mainly presented in a graph form and deals with the number of individuals in per unit area. It deals with multiple trophic levels with producers forming the base and the top carnivore occurs at the tip. It is upright in shape which means that the base is larger in size and it decreases as we move upwards. The numbers of organisms at the higher level are less in number as compared to the organisms which occur at the lower levels. The producer organisms are the largest in number. They support the herbivore and carnivore which are fewer in the number. In the land the grass is eaten by the grasshopper. The grasshopper is eaten by the frog and the frog is eaten by the snake. Ultimately, the snake is eaten by the peacock. In the other aquatic food chain, the phytoplankton is eaten by the zooplankton. The zooplankton is eaten by the small crustaceans. The small crustaceans are eaten by the predator insects. The predator insects are eaten by the small fish. The small fish are eaten by the large fish. This is followed by the kingfisher. The kingfisher is least in number. At the higher trophic levels the number of pyramids is usually smaller in size. The higher organisms are dependent on the lower organisms for their food. When the energy is transferred from one level to the other 90 percent of it is wasted and only 10 percent of it is utilized. Sometimes the single sized tree provides food to the number of herbivore like birds which support a large number of ecto parasites. This is an inverted pyramid. The small sized birds are eaten by the eagles which are fewer in number. They form a spindle shape pyramid.