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

question 67

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/unit of area/unit of time.
• B) NPP can be expressed in terms of carbon fixed by photosynthesis for an entire ecosystem.
• C) NPP represents the stored chemical energy that is available to consumers in the ecosystem.
• D) NPP is the same as the standing crop.
• E) NPP shows the rate at which the standing crop is utilized by consumers.

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Definitions:

Artificial Pacemaker

An electronic device implanted in the body to regulate the heartbeat by generating electrical impulses.

Vena Cava

One of two large veins that empty into the right atrium of the heart.

Right Atrium

The right upper chamber of the heart that receives deoxygenated blood from the body through the vena cava.

Right Ventricle

One of the four chambers of the heart, responsible for pumping deoxygenated blood to the lungs.