Because heated gases tend to rise, the trapped gases flow within the confines of each channel until the channel is filled and then spill around the lower edges thereof into the open spaces between {TAIL ~ channels} in {HEAD ~ a manner} that helps distribute both the heat and flavoring vapors evenly over the entire cooking surface of the grill 
Because heated gases tend to rise , the trapped gases flow within the confines of each channel until the channel is filled and then spill around the lower edges thereof into the open spaces between { TAIL ~ channels } in { HEAD ~ a manner } that helps distribute both the heat and flavoring vapors evenly over the entire cooking surface of the grill
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