“The energy flow

• Second law of Thermodynamics states that energy can neither be created nor be destroyed, it can only be transformed from one form to another form.

• Energy flows in the ecosystem through external environment to the series of organisms back again to the external environment.

• During this process 90% of the energy is utilised by the each trophic level and only 10% energy is passed to next trophic level,

• The utilised energy later on transforms into heat.