Which of the following statements is not correct about energy flow in an ecosystem?

  • A
    Pyramid of energy is always upright.
  • B
    Energy flow is unidirectional.
  • C
    Energy flow is cyclic.
  • D
    Ecological efficiency is generally $10\%$.

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The transfer of energy from one trophic level to another follows the second law of thermodynamics. The efficiency of energy transfer from herbivores to carnivores is: (in $\%$)

During the transformation of energy, in what form is energy lost?

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