Write a short note on different fertility.

A recurrent concern in many societies is that not all groups reproduce at the same rate. In retrospect, there has been increasing evidence that the growth of population has been fluctuating in many parts of the world. In many Asian countries, population growth has been curbed at a pace much faster than most of the demographers had anticipated earlier. In Western countries, the rate of growth of population is optimum or is on the verge of growth. This tremendous fluctuation in the growth of population or reproduction rate worldwide mainly depends on the rate of fertility and the differentiation in fertility rate termed as differential fertility.

Page no 27 kkhsou Books mso 15