 |
� |
 |
| � |
| Crust |
| � |
The Earth�s outer shell. It is made of solid rock that is between 7-70 kilometres thick. |
 |
| � |
| GDP |
| � |
Gross Domestic Product, the total value of all the goods and services produced by a country in a year. It is often measured 'per capita' or per person, to make an average. |
|
| � |
| Human Development Index (HDI) |
| � |
A more accurate way of measuring development that combines several different indicators. Learn how to calculate the HDI from http://hdr.undp.org/statistics/indices/hdi_calculator.cfm. |
|
| � |
| Infant mortality |
| � |
The number of babies out of every thousand born that die before the age of one. |
|
| � |
| Mantle |
| � |
The layer of the Earth�s interior that is made of mostly solid rock. The Mantle extends from the bottom of the Earth�s crust down to 2,900 kilometres deep inside the Earth. |
|
| � |
| Militia |
| � |
Groups trained like soldiers but are not part of an official army. |
|
| � |
| Opencast |
| � |
Mining minerals from the surface of the Earth. |
|
| � |
| Population density |
| � |
The number of people per square kilometre. |
|
| � |
| Rain Shadow |
| � |
The sheltered (leeward) side of an upland area. Here, the air is descending which means that it is warming up and less likely to produce rain. |
|
| � |
|
� |
 |
� |
 |
|
|
