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spec: Flax does not require as much fertilizer as cereals but will benefit if nitrogen or phosphorus is limiting . While the overall prevalence of underweight ( low weight-forage ) has decreased from 1992 to 1996 , there has been an increase from 29.4 to 42 % amongst children aged 25-48 months and from 0 to 13 % amongst children aged 49-60 months . With increasing emphasis on workplace learning , life long education and professional development , these learners are frequently unable , or unwilling to attend tr aditional courses , but prefer more flexible study . The Allegheny Mountains proved to be a challenging obstacle surmounted by an ingenious system of canals , railroad tracks , and inclined planes . These parameters deal with the performance of the star scanner that controls the spacecraft 's ability to point at targets in space . Classical debates around civil society had the issue of evidence and knowledge at their heart . Iran 's involvement in Iraq is far more complex than previously realized , experts say . This did much to convince policymakers of the feasibility and merits of the poverty reduction strategy model .