Home Biology Ecosystem Image Based Problems The diagram shows estimated values for carbo…
Biology Ecosystem Image Based Problems Single Correct MCQ
Published on: August 13, 2026

The diagram shows estimated values for carbon fixation in a terrestrial ecosystem. Figures refer to tonnes x 109, fixed or available for fixation.

Which conclusion can be drawn from the diagram?

A
There is a net gain to the producers.
B
The system is in balance.
C
There is a net loss to the atmosphere.
D
There is a net loss to the decomposers

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Text Solution

Verified by Experts
The correct answer is:
B

Atmosphere = 700

Biomass = 450

Dead organic matter + decomposers = 700

Inputs and outputs of carbon (25, 25, 10, etc.) show no net accumulation or depletion in any single reservoir.

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