Because {HEAD ~ turbulence} increases {TAIL ~ the rate} of convection, the turbulent action created by the protrusions in the first row increases the rate of convection of the cooling system 
increases
Because { HEAD ~ turbulence } increases { TAIL ~ the rate } of convection , the turbulent action created by the protrusions in the first row increases the rate of convection of the cooling system
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH