Biology especially all of this there are places which are prone to natural disasters and they are so remote that it's very difficult to supply food over there even such kind of places exist in today's world so in order to deal with this problem the government has designed something called national food security system and it has two components one is above a stock and another one is public distribution system so the meaning of buffer stock is keeping a large quantity of food in a storage or a warehouse and then public distribution system
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