You can't lump all of agriculture together as essential. A huge amount of the GDP in agriculture is in cash crops such as nuts. A drought wiping out all the alm

You can't lump all of agriculture together as essential. A huge amount of the GDP in agriculture is in cash crops such as nuts. A drought wiping out all the almond production would be a disaster for almond farmers but not for food security. A drought wiping out half all grain production would be a food security disaster, however.