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A countries dependency ratio is the total elderly population (65 years old +) divided by the total working age population (15-65 years old) times by 100. An ageining population would create a high percent...
Challenges often fall within one of the following categories: social or economic. Social issues often come from the local community, for example they may not agree with the instillation of a particular se...
When a denser, oceanic plate subducts (moves under) a less dense continental plate, the plates can 'lock' and experience friction because of the opposing movement of the plates - we call this area a 'subd...
At a high energy coastline, with resistant coastal geology, a crack may form in the cliff at an area of weakness in the rock. As wave energy causes erosion through hydraulic action, as air is forced into ...
First of all, it is important to acknowledge that there are two different types of hazard. The first, geophysical hazards, includes earthquakes and volcanoes. The second are hydro-meteorological hazards, ...
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