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Net Energy Gain and Loss
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AP Biology
APB.429 Net Energy Gain and Loss
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A producer population's net primary productivity drops by 40 percent after several cloudy weeks. Herbivores in the same habitat have unchanged metabolic costs. Which cascading prediction is best?
A
Predator reproduction should increase first because cloudy weather adds energy to consumers.
B
No consumer should be affected because NPP is unrelated to food-web energy.
C
Herbivore biomass should increase because lower NPP means less competition among plants.
D
Herbivore growth and survival may decline, which can later reduce predator reproduction.
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