A) Linear
B) inverted
C) Irregular
D) upright only
Correct Answer: D
Solution :
The pyramid of energy in an ecosystem is always upright, because energy is transferred from herbivores to carnivores and finally to the top carnivores. With every transfer, a certain amount of energy is lost in the form of heat or radiation. Thus, the energy at each trophic level decreases and finally it is completely us the top carnivores.
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