Other indicators: adult literacy, diet, energy consumption, employment structures. INEQUALITIES IN WORLD DEVELOPMENT: Life expentancy: regarded by the UN as the better indicator to measure the safety and health of the country. EDUCATIONAL ATTAINMENT: Is obtained by the combination of adult literacy rates and the primary, secundary and tertiary student enrolment rates. REAL GDP PER CAPITAL: Adjusted to the actual purchasing power what the average income will actually buy in a country. CAUSES OF INEQUALITY: Minerals... Social: education, health, better quality life. Political: Government Civil War. Enviromental earthquakes etc. Consecuences of inequality: Higher birth rates and infant mortality rates. Poorer education facilities, poorer diets and poorer provision of services. More jobs in primary and informal sectors. A smaller volume of trade. Less purchasing power per capital. World trade and interdependence: No country is self-sufficient in the full range of raw materials (food minerals and energy). Trade is the flow of commodities from producers to consumers, and it is important in the development of a country.Raw materials goods and services baught by a country are called imports, and those sold by a country are called exports. The difference between them is called trade balance. Patterns of world range: The LEDCS provide primary goods such as foodstuffs and raw materials. -The MEDCS process primary goods, which they either possess themselves or obtain from LEDCS, into secundary goods. PLATE TECTONICS: Primary effects: A lot of buildings collapsed, several trains on minor lines where destroyed.. Secondary effects: Electricity, gas and water supplies were disrupted, fires causes by bbroken gas pipes, roads where at gridlock, people were made homeless and had to live in temporary shelters. People were afraid to return home due to the aftershock, some industries where forced to close.