Fill in the blanks 1. ................. refers to all the people who live in a particular area. 2. At present, the population of the world stand at ............ billion. 3. Second most populated country in the world is ............... 4. Continent-wise, Asia has the largest population, followed by .............5. India’s most populous city is................ 6. ...................... refers to the number of people living in a unit area of space. 7. In ...................... condition, the number of people in a particular area is more than the available resources. 8. ............ population puts less pressure on the environment. 9. Sex ratio of 940 means there are............ girls for every .............. boys. 10. The sex ratio is usually unfavourable in those countries where ................. .............. is widespread. 11. The average sex ratio in the world is ............. females to every 1000 males. 12. ............... Europe has the highest sex ratio with 1179 females for every 1000 males.13. ................ shaped population pyramid indicates rapid population growth.14. Not being able to have babies or produce young ones is called ................15. In India 69 % population is rural and ...............