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Brain teaser 4
We use faeces (dung) as a fertilizer to help our crops grow. So why worry about keeping it out of water and food?
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© UNICEF/HQ97-0304/Noorani
Many people use faeces as fertilizer for fields like this vegetable garden In Bangladesh.
Faeces, including human faeces, can be an effective fertilizer for soil. Human faeces contain valuable nutrients including nitrogen, phosphorus and potassium.