Page 43 - Health, Population and Environment Education 9

27. According to WHO, death can be defined as, “The permanent disappearance of all
the evidences of life.”
28. Their life expectancy has been extended a lot in comparison to last (20 – 30) years. It
is actually due to availability of health services, healthy manpower, improvement
in health sector, invention of medicines, control of diseases, awareness on health
education, etc.
29. Migration is the movement of people from one place to another place either
temporarily or permanently due to various reasons.
30. Those factors which attract people to come and live in a particular place are called
pull factors.
31. Those factors which force people to change their place and migrate somewhere else
are called push factors.

Exercise

A. Write very short answer to the following questions.
1. Who coined the term ‘demography’ first?
2. What is demography?
3. What is social demography?
4. Mention any two examples of secondary sources of data.
5. When and where was first census conducted in the world?
6. What was the main purpose of ancient census?
7. When and where was the first modern census conducted in world ?
8. When was the first census conducted in Nepal?
9. Which census is regarded as the first scientific census in Nepal ?
10. Mention any two characteristics considered during census.
11. In how many years interval is census conducted in Nepal?
12. Write any one type of census.
13. Which method of census is used to conduct census in Nepal?
14. What is vital registration system?
15. When was the first modern vital registration started in the world?
16. When was the promulgation of vital registration in Nepal?
17. When was vital registration started in all the districts in Nepal?
18. Mention any one use of birth and death certificate.
19. Give any two examples of administrative records.
20. When was sample survey conducted first in Nepal?
21. In which country is sample survey used nowadays?
22. What are the natural and artificial factors of population change?
23. What are pull and push factors?

GREEN Environment Population and Health Education Book-9 43