Why there should be food security? How food security is ensured in a country?

(i) Why food security? : (a) If there is no food security in a country, the poorest section of the society might not get food most of the times. (b) Others might too face problems in case of a national disaster or calamity like earthquake, drought, flood, tsunami, widespread failure of crops causing famine. In such situations, the production of food grains decreases leading to shortage of food in the affected areas. Thus, people do not get enough food and become food insecure. So, there should be food security to ensure that everyone may get two square meals a day.
(ii) The food security is ensured in the following ways:
(a) Enough food is available for all the persons.
(b) All persons have the capacity to buy food of acceptable quality
(c) There is no barrier on access to food.