The mass of living material at a trophic level at a particular time is called (a) net primary productivity (b) standing crop (c) gross primary productivity (d) standing state.

The mass of living material at a trophic level at a
particular time is called
(a) net primary productivity
(b) standing crop
(c) gross primary productivity
(d) standing state.
by

1 Answer

Answer :

(b) standing crop
by

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