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

  • A
    Gross primary productivity $(GPP)$
  • B
    Net primary productivity $(NPP)$
  • C
    Secondary productivity
  • D
    Tertiary productivity

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The rate of formation of new organic matter by a rabbit in a grassland is called:

The idea of the productivity of an ecosystem can be obtained from:

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Which one of the following ecosystems has the highest annual net primary productivity?

Energy storage at consumer level is called

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