明知他人从事前款活动，为其提供条件的，依照前款的规定处罚。
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Rebecca Morelle, Alison Francis and Greg BrosnanBBC Science
DigitalPrintPrint + Digital
In the Sicilian town of Giarre overlooking Mount Etna, Andrea Passanisi, a tropical and citrus fruits producer, uses an unusual fertiliser on his 100-hectare (247-acre) stretch of land: volcano ash.