What is soil?
The natural body at Earth's surface composed of mineral and organic material, water, air and living organisms that supports plant growth
View source Verified on 16 September 2026
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General Knowledge of Pakistan
The natural body at Earth's surface composed of mineral and organic material, water, air and living organisms that supports plant growth
The controlled biological decomposition of organic materials into a nutrient-rich soil amendment
Nitrogen and phosphorus
Excessive nutrient enrichment of water that can cause algal growth and oxygen depletion
It absorbs most of the Sun's harmful ultraviolet-B radiation