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IB Geography CORE

저작시기 2014.01 |등록일 2017.03.25 파일확장자어도비 PDF (pdf) | 16페이지 | 가격 2,000원

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World’s pop growing increasingly rapidly, exponentially- most in quite recent.
Likely to peak at between 10~12bln in 2070.
CBR (Crude Birth Rate)- no. of births per 1000 ppl in pop
TFR (Total Fertility Rate)- av. No. of births per 1000 women of childbearing age
Why high birth rates: for labour, look after parents in old age, for continue family name, childrens are net
contributors to family income
Why birth rates come down: children are costly, government looks after ppl through pensions and health

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