Finally, the air in the screw cap is not pushed into {HEAD ~ the bottle}, which further reduces {TAIL ~ the amount} of oxygen in the neck of the bottle 
reduces
Finally , the air in the screw cap is not pushed into { HEAD ~ the bottle } , which further reduces { TAIL ~ the amount } of oxygen in the neck of the bottle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH