The sex ratio in India refers to the number of females per 1000 males. The 2001 Census found a sex ratio of 933 females per 1000 males, a slight increase from 1991. However, some regions like Punjab, Haryana, and Gujarat had ratios under 800 females per 1000 males for children aged 0-6. Reasons for declining child sex ratios include preferences for sons, female foeticide, and lack of education. This imbalance could have long-term implications like a surplus of young unmarried men by 2020. Recommendations to improve the ratio include registering all births, especially of girls, changing mindsets, and providing more support and education for girls.