browny - phosophate is demand and supply seperate from oil u are right.
Food prices are influenced greatly by the oil price why well farmers use oil in their machines, transport costs are a large part, inflation from oil drives up the cost of moving and farming. So food is about 25% linked to the oil price as a cost of produciton. The prices were mentioned probably because they are another input cost in farming. biofuels stil take fertilizer to product they are just an oil alternative.
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