The P₂O₅ in all fertilisers comes from

Solution (By Examveda Team)

P₂O₅ is Triple super phosphate and it is concentrated superphosphate. It contains 46% of P₂O₅.
This P₂O₅ in all fertilizers comes from Phosphate rock, a finite source formed over millions of years in the earth’s crust. About 90% of the world’s mined phosphate rock is used in agriculture and food production, mostly as fertilizer.