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In the equation GPP - R = NPP

R represents:

Option: 1

Radiant energy


Option: 2

Retardation factor


Option: 3

Environment factor


Option: 4

Respiration losses


Answers (1)

best_answer

GPP is gross primary productivity that is the rate of total production of biomass by producers.

R is the respiratiory loss. A part of biomass produced by the plant utilized by them for their respiration.

NPP is the balance of biomass or energy remaining after meeting the cost of respiration of producers.

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