Which of the following statements is incorrect?

  • A
    Plants capture $2-10 \%$ of the photosynthetically active radiation $(PAR)$.
  • B
    The first law of thermodynamics is not applicable to ecosystems.
  • C
    The second law of thermodynamics explains why energy must be constantly supplied to ecosystems.
  • D
    The standing crop is measured in terms of biomass or number per unit area.

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