Which of the following is the unit of productivity of an ecosystem?

  • A
    $gm^{-2}$
  • B
    $KCal m^{-2}$
  • C
    $KCal m^{-3}$
  • D
    $(KCal m^{-2}) yr^{-1}$

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The rate of formation of new organic matter by consumers is .........

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............. of an ecosystem is the rate of production of organic matter during photosynthesis.

Primary productivity depends on.........

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