1. S1: What are the causes of our chronic food shortage ? P : To find for these growing new millions is desperate task. Q : every year, we add more than a crore of persons to our population. R : Despite stupendous efforts by our government, the population is growing unabated. S : The chief cause is the population explosion. S6: This unprecedented growth can drag us to the doors of starvation very soon. The Proper sequence should be: