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The EGR system routes a number of the exhaust gases (6 ? 10%) from the EGR valve, last on the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they cannot burn in the combustion chamber; also, the exhaust gases take up a number of the space which would preferably be taken with the intake air. This reduces the volume of intake air readily available for the combustion process during each Power Stroke; which in turn decreases the peak combustion temperatures. This brings about lower NOx emissions. To keep parasailing a safe water sport, stringent measures are actually introduced intended for the training of commercial parasailing operators as well as the quality of apparatus used. The materials used for the canopy, the harness, what's needed for the boat, and also other necessary tools to look for the wind, for instance a windsock, are all monitored by governing bodies. 6. The use of smaller words and shorter sentences