Q.1 A) Complete the chain (05) A B C High Stationary BR and DR both decrease Population growth stable Early Expanding BR very low than DR Population growth rapid Late Expanding BR and DR both very low Population growth minimal Low Stationary BR and DR both are high Population growth negative Declining BR constant and DR decreases Population growth reduces DR High and BR Low No change in population growth.
Answers
Explanation:
The world and most regions and countries are experiencing unprecedentedly rapid demographic change. The most obvious example of this change is the huge expansion of human numbers: four billion have been added since 1950. Projections for the next half century expect a highly divergent world, with stagnation or potential decline in parts of the developed world and continued rapid growth in the least developed regions. Other demographic processes are also undergoing extraordinary change: women's fertility has dropped rapidly and life expectancy has risen to new highs. Past trends in fertility and mortality have led to very young populations in high fertility countries in the developing world and to increasingly older populations in the developed world. Contemporary societies are now at very different stages of their demographic transitions. This paper summarizes key trends in population size, fertility and mortality, and age structures during these transitions. The focus is on the century from 1950 to 2050, which covers the period of most rapid global demographic transformation.