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| Question | Answer |
| one child policy created in 1997 under the age of 20 there are 30 million more boys than girls | people want boys cause: they carry on the family name , they can run the family buisness if the family owns a farm, they can also have a wife to look after the parents when there old where as a girl will be helping another family. |
| key words demographic transition model= a mesure of population change of birth rate and death rate, natural birth rate = the increase of birth to death rate. | reasons for population growth. better health care, more access to contraception, |
| Population growth for a particular country is determined by four factors, births (B), deaths (D), immigration rate (I), and emigration rate (E): growth rate of population = B-D+(I-E) |
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