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An interesting consequence of its smaller cross section is its lesser wind resistance , an important feature in a sailing vessel . The cooler continues to draw air from inside the case and expel it out the back , but it uses its larger fan 's location at the very end of the card to pull air from farther within . Yield increases with maturity until the crop starts to dry off and sheds its lower leaves . Part of the problem with a national test is its narrower content . When located in a high density stand , the Cedrus libani grows straighter , whereas when growing in a low density stand , the Cedrus libani develops its lower horizontal branches and spreads them out over long distances .