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Assessment
What is the primary role of soil microorganisms in the ecosystem?
Decomposing organic matter
Absorbing water for plants
Producing toxins for defense
Regulating atmospheric pressure
Which group of soil microorganisms is primarily responsible for nitrogen fixation?
Bacteria
Fungi
Algae
Protozoa
What is soil respiration primarily associated with?
The activity of soil microorganisms
The evaporation of soil moisture
Uptake of carbon dioxide by plants
Physical erosion of soil
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