Free IB Geography check

A country has 30 per cent of its people aged 0 to 14 and 10 per cent aged 65 and over. What is its dependency ratio?

Arctic sea ice melts and exposes darker ocean water. Why is this a positive feedback loop?

A country's ecological footprint is 5.5 global hectares per person and its biocapacity is 2.0 global hectares per person. What does this show?

A river channel is rectangular, 10 m wide and 2 m deep at bankfull. What is its hydraulic radius?

During an El Niño event, why does the anchoveta catch off Peru usually fall?

Which change in diet is typical of the nutrition transition in a country where incomes and urbanization are rising quickly?

Why are department stores and offices usually found in the central business district (CBD) rather than on the urban fringe?

A 10-mark answer covers the whole question with correct evidence and evaluates its analysis, but its conclusion argues only one side. Which markband fits it best?

Which is the most direct economic challenge of an ageing population?

After the 1991 eruption of Mount Pinatubo, global mean temperature fell by about 0.5°C. Which process explains the fall?

Global extreme poverty has fallen since 1990. In which region do most of the people still in extreme poverty now live?

In the eutrophication of a lake fed by run-off from farmland, what most directly causes fish to die?

Why do hurricanes almost never form within about 5 degrees of latitude of the equator?

Country X and country Y have the same life expectancy, but country X has a lower health-adjusted life expectancy (HALE). What does this show?

Which factor best explains the loss of manufacturing jobs in many inner cities of high-income countries since the 1960s?