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**Pratt86** Story problem my teacher gave me and I have no idea where to start. If someone can get me started I would greatly appreciate it. Thanks

If a prairie soil that had 6% organic matter under natural prairie vegetation in 1860 now only has 3% organic matter in the top foot, how many lbs of N have been lost per acre ?

Assume that soil organic matter was only depleted in the top foot. Assume

that nitrogen makes up 5% of the mass of soil organic matter. Assume that 1

cubic foot of soil weighs 80 lbs. Remember that 1 acre = 43,560 square

feet.