Answer:
A. Chemical energy is used by each of the organisms in the food pyramid, resulting in less energy as it moves up the pyramid.
Explanation:
Green plants are autotrophs. They manufacture their own food through photosynthesis. Through sunlight, the food manufactured has chemical energy stored in them which is made available to the heterotrophs. Heterotrophs are mainly consumers, while autotrophs are producers.
Heterotrophs rely on autotrophs for their nutrition.
Thus, as consumers above at the top of the pyramid feeds on those below, the stored energy is being transferred up and used. These energy reduces as it goes up right to the top of the pyramid.
The best statement that describes how chemical energy is transferred up the pyramid is: "A. Chemical energy is used by each of the organisms in the food pyramid, resulting in less energy as it moves up the pyramid."
