We have to decrease the world population

Now the world population was increased more and still increasing.If we cant find a solution to decrease the world population then in future our coming generation will suffer more..So hereafter we must birth one child only for a family and this only solve the issue .Everyone who are going to marry should keep promise by their own that we are birth only a single child only...If we follow this rule one family and one child then the population will surely decreased in future..

For example...

In a village 1000 couples are living there...

then they birth only one child then  1000 child only born

then the 1000 child become 500 couples..

then at next generation become 250 couples...

then the next generation become 125 couples only in the village


IF the population is less we can easily increase in one generation ..

but for decreasing the population it takes 4 to 5 generation..

So we must make awareness to the people and implement from now because its urgent now...

if the world population increases in the way. then  every problem will increase more related to that.