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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Definitions:

Atom Model

A representation or theory that describes the structure and behavior of atoms, the basic unit of matter. The most widely known example is the Bohr model, with electrons orbiting a nucleus.

Electrons

Electrons are subatomic particles with a negative electric charge, found in all atoms, and play a crucial role in chemical reactions and electricity.

Orbital Paths

Paths in space along which objects such as planets, moons, and satellites travel around another body.

Electron Shells

Electron shells are layers of electrons that surround the nucleus of an atom, where each shell has a different energy level.