BI-1873
Carbon cycle and carbon sinks
Biology · Secondary 4 · Medium · Carbon cycle and carbon sinks
In a closed terrarium, plants and decomposers are present but no organisms are added or removed. Which statement about the carbon cycle in this terrarium is correct?
- Carbon dioxide is only taken in by plants and never released again.
- Carbon dioxide is both taken in by photosynthesis and released by respiration.
- Only decomposers release carbon dioxide; plants do not respire.
- Carbon atoms leave the terrarium permanently as energy is lost.
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