Answer:
Sex Ratio: It is defined as the number of males per thousand female. World pattern of sex ratio: (i) On an average, the world population reflects a sex ratio of 990 females per 1000 males. (ii) The highest sex ratio in the world has been recorded Lativia which is 1187 females per 1000 males. (iii) The lowest sex ratio occurs in UAE which is 468 females per 1000 males. (iv) The world pattern of sex ratio does not exhibit variations in the developed regions of the world. (v) The sex ratio is favourable for females in 139 countries of the world and unfavourable for them in the remaining 72 countries listed in United Nations. (vi) In general, Asia has a low sex ratio, countries like China, India, Saudi Arabia, Pakistan, and Afghanistan have a lower sex ratio. (vii) On the other extreme is greater part of Europe including Russia where males are in minority. (viii) A deficit of males in the population of many European countries is attributed to better status of woman and an excessively male-dominated out-migration to different parts of the world in the past.
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