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What are the three components that make up the Human Development Index?

HDI is a composite indicator used to rank levels of development among countries. The 3 components are:Life expectancy (years at birth)Education index (mean years of schooling/expected years of schooling)S...

Answered by Grace H. • Geography tutor

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What is meant by the lag time on a flood hydrograph?

The lag time is the time difference between the peak rainfall and the peak discharge that occurs as a result.

Answered by Laura C. • Geography tutor

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With reference to one case study, what are the primary and secondary effects of a volcanic eruption?

case study: Montserrat
Primary effects: 66% of island was covered in ash, 23 people died, buildings and infrastructure damaged
Secondary effects: tourism industry struggles, people left the isla...

Answered by Georgina P. • Geography tutor

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Describe and explain the formation of a Corrie (9 marks)

A corrie is a bowl-shaped hollow on a mountain side formed during a period of glacial erosion, an example being Cwm Idwal in Snowdonia, Wales. A corrie begins its formation as an accumulation of snow on t...

Answered by Jasmine A. • Geography tutor

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Assess the impact of TNCs (transnational corporations) on creating both winners and losers for people and environments.

Transnational Corporations (TNCs) are companies that operate across a number of different nations to provide services and products and are seen by many as the key force in globalisation.
TNCs can be...

Answered by Ben F. • Geography tutor

19225 Views