我想知道以下生字的英文解釋...請進入(急)10分!!!!

1)census/by-census
人口普查 counting and surveying of the population for official purposes

2)natural increase
淨增長　rate of population growth by childbirth

3)net migration
淨移民　

4)birth rate
出生率　number of births per year per thousand people (in a given area, group, etc.)

5)death rate
死亡率 number of deaths per unit of population in a given place and time

6)population density
人口密度　term which describes the number of people in relation to a unit of populated area

7)land area
陸地面積

8)government policy
政府政策 politics of the ruling political administration

9)population pyramid
人口金字塔

10)age structure
年齡分佈結構

11)sex structure
男女分佈結構

12)new arrivals
新移民

10/11唔sure, 因為冇讀geog

1)人口調查2)自然增量3)淨遷移4)出生率5)死亡率6)人口密度7)陸地面積8)政府政策9)人口年齡金字塔10)年齡結構11)性結構12)新的到來