SACE Stage 2 Geography Practice Questions - SACE Stage 2 Geography External Assessment Exam

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An estuarine wetland ecosystem produces a Gross Primary Productivity (GPP) of 4,000 g/m²/year. If autotrophic respiration (R) accounts for 2,250 g/m²/year, what is the Net Primary Productivity (NPP) of the ecosystem?

1,750 g/m²/year 6,250 g/m²/year 1.78 g/m²/year 2,250 g/m²/year

Correct Answer:

1,750 g/m²/year

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