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Type PO if changes is due to the presence of oxygen and AO if it is due to the absence of oxygen.
Quiz by Robert Ojo
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Type PO if changes is due to the presence of oxygen and AO if it is due to the absence of oxygen. ( 1. RUSTING OF IRON )
Type PO if changes is due to the presence of oxygen and AO if it is due to the absence of oxygen. (DISCOLORATION OF APPLE )
Type PO if changes is due to the presence of oxygen and AO if it is due to the absence of oxygen. ( BURNING OF LOGS/ WOODS)
Type PO if changes is due to the presence of oxygen and AO if it is due to the absence of oxygen. ( DECAYING OF FOOD)
Type PO if changes is due to the presence of oxygen and AO if it is due to the absence of oxygen. ( PUTTING OFF FLAME)