The African country Niger has a population of around 15.5million, and currently has the highest population growth rate ofany country in the world. However, the UN predicts that under amedium fertility scenario, the population growth rate willgradually decrease from more than 3.5 % per annum (now) to around1.2 % per annum in the year 2100.
1) Suggest some physical reasons why the growth rate of Nigermight decrease over the next 90 years.
2) Demographers propose using the logistic DE to model theprojected population of Niger P(t)P(t)over the next 90 years,so
P?=rP(1?P/C)P?=rP(1?P/C)
where rr is the growth rate and CC is the maximum “carryingcapacity” for
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