The amount of energy lost at the transition between each trophic level of the pyramid of energy is about
a. 10%
b. 50%
c. 70%
d. 90%

The correct answer is option D, 90%

Explanation:

The food pyramid consists of trophic level representing the species based on their food intakes. A species at the bottom of the pyramid is a producer i.e plant and it is capable of producing food using sunlight. Now when a primary consumer consumes the plant, only 10% of  the energy is passed on to it through the plant and remaining 90% goes into waste. Like wise at each trophic level only 10 %of energy of the previous trophic level is passed on.