Population：练习题

A country experiences a birth rate of 25 per 1,000, a death rate of 10 per 1,000, and net migration of \(-2\) per 1,000. What is the annual rate of population growth for this country?

In many developed economies, the birth rate has fallen below the replacement level. Which combination of factors is most likely to have caused this trend?

What is most likely to be a consequence of a country having an optimum population?

An economy is experiencing a significant increase in its dependency ratio due to an ageing population. What is a likely macroeconomic effect of this change?

A population pyramid for a country has a very wide base that narrows rapidly toward the top. What does this specific shape indicate about the country's demographic structure?

The demographic profile of many countries is changing due to variations in birth rates, death rates, and migration patterns.

(a) Identify two factors that could lead to a fall in the death rate of a country.
(b) Explain the relationship between an ageing population and the dependency ratio of an economy.
(c) Discuss the potential economic consequences of a significant increase in net immigration on a country’s optimum population and its public services.