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You would expect 25 Kcal of energy stored in trophic level 4.

Explanation:

Energy flow in the ecosystem follows 10% law according to which 10% of the energy in the lower trophic level is  transferred to the next trophic level.

In this example grass belongs to the first trophic level, producers.

Energy of grass=25000Kcal

Energy transferred to trophic level 2=10% of 25000=2500

10% of the energy in trophic level 2 is transferred to trophic level 3.

Hence energy at trophic level 3=10% of 2500=250Kcal

Energy transferred to trophic level 4=10% of energy in trophic level 3

                                                              =10% of 250=25Kcal

Energy to be stored in trophic level 4=25Kcal

There will be 25 Kcal

Explanation:

The 5th - .01% out of 25000 is 2.5

The 4th -  .1% out of 25000 is 25

The 3rd - 1% out of 25000 is 250

The 2nd - 10% out of 25000 is 2,500

The 1st - 100% out of 25000 is 25,000

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

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