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Assessment
What role do microorganisms play in the soil nutrient cycle?
Decomposition of organic matter
Photosynthesis
Mineralization of nutrients
Water retention
Which nutrient is primarily associated with microbial activity in the soil?
Sulfur
Nitrogen
Calcium
Phosphorus
How do soil microorganisms contribute to soil fertility?
By fixing carbon dioxide
By enhancing nutrient availability
By competing with crops for nutrients
By creating toxic substances in the soil
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