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| कॉलम-$I$ | कॉलम-$II$ |
| $(a)$ सकल प्राथमिक उत्पादकता | $(1)$ $NPP$ |
| $(b)$ शुद्ध प्राथमिक उत्पादकता | $(2)$ $SP$ |
| $(c)$ द्वितीयक उत्पादकता | $(3)$ $GPP$ |
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