Ecological Pyramids

Introduction Ecological Pyramids are graphical representation of structure & function of ecosystem at trophic levels. First described by Charles Elton, hence, also called Elton Pyramids. Show relative amounts of parameters like number, energy, biomass etc. across trophic levels. First trophic level/Producer forms the base. Successive trophic levels are represented by tiers above the base. 1) […]

Class 9th – STRUCTURE OF ATOM (Atomic & Mass Number)

We have already discussed the model of an atom and also were the subatomic particles are present inside an atom. Atomic Number As we know that the protons are present inside the nucleus , so the atomic no. of an element is defined as the number of protons present in an atom. Therefore, atomic number […]

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