answer:Hmmm, that could be serious. But most likely, it will result in gradually reduced crop output, and thus higher prices for certain food items. No resource just stops cold instantly, so there will be a gradual effect of its diminished supply. On the bright side, science has always had a knack for developing a substitute for essential ingredients to civilization when the need is greatest, such as for example synthetic rubber in the 1940s when supplies of natural rubber ceased to be sufficient to meet the growing demand of civilization (and World War 2).