Why Is Net Primary Production (NPP)a More Useful Measurement to an Ecosystem

question 53

Multiple Choice

Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP) ?

• A)NPP can be expressed in energy per unit of area per unit of time [J/(m².yr].
• B)NPP is expressed in terms of carbon fixed by photosynthesis for an ecosystem.
• C)NPP represents the stored energy available to consumers in an ecosystem.
• D)NPP is the same as the total biomass of the photosynthetic autotrophs present.
• E)NPP shows the rate at which the total biomass is utilized by primary consumers.

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