Deficiency of which micronutrient is a major preventable cause of impaired mental development?
Iodine
View source Verified on 16 September 2026
Answered
General Knowledge of Pakistan
Iodine
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