Question 13 (1 point) Which of the following best describes the net primary productivity of an ecosystem?

Net primary productivity is the amount of energy lost by producers through respiration over time.
Net primary productivity is the amount of energy captured by producers through photosynthesis over time.
Net primary productivity is the amount of energy lost through respiration by producers subtracted from the gross primary
productivity of an ecosystem.
Net primary productivity is the amount of energy lost through respiration by producers added to the gross primary productivity of
an ecosystemh

Net primary productivity can be defined as the amount of energy lost through respiration by producers subtracted from the gross primary.

In a food web, the energy flows at different trophic levels from producers to consumers. This can be easily exhibited by a diagram known as an energy pyramid.Primary producers (e.g., algae and plants) are organisms that synthesize their own food in the ecosystem.For example, plants use energy from the sun to produce their own food in the form of simple carbohydrates (glucose molecules)Consumers (e.g., herbivores and carnivores) are organisms that cannot synthesize their own food and need to eat other organisms to survive.Net primary productivity refers to the primary productivity of the producers as biomass in the ecosystem minus the energy loss due to metabolic and maintenance rates.

In conclusion, the net primary productivity can be defined as the amount of energy lost through respiration by producers subtracted from the gross primary.

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