Edexcel IGCSE Geography 复习笔记 4.3.3 Management of Energy Sources Sustainable Energy Management Sustainable energy management is essential if future generations are to have the energy resources t...
Edexcel IGCSE Geography 复习笔记 4.3.2 Types of Energy Sources Non-Renewable Energy Non-renewable energy are energy sources which are finite and will eventually run out. They include: Gas Oil Coal ...
Edexcel IGCSE Geography 复习笔记 4.3.1 Energy Demand and Production Energy Demand Global energy demand has rapidly increased. Population growth and development are the two main causes of the increa...
Edexcel IGCSE Geography 复习笔记 4.2.3 Relationship of Population on Resources Population & Resources Economic activities all involve the use of resources and energy The rate at which resources...
Edexcel IGCSE Geography 复习笔记 4.2.2 Informal Employment Causes of Informal Employment Informal employment is any employment which is unregulated and unofficial It is estimated that more than 60%...
Formation of Sugars Monosaccharides can join together via condensation reactions to form disaccharides A condensation reaction is one in which two molecules join together via the formation of a new...
Edexcel IGCSE Geography 复习笔记 4.2.1 Impacts of Economic Sectors Case Study: Sector Shift in the UK The UK is in the post-industrial stage of the Clark-Fisher model It was the first country to ex...
Edexcel IGCSE Geography 复习笔记 4.1.3 Changes in Economic Sectors Causes of Change As countries develop the numbers of people employed in each economic sector changes This can be seen in the Clark...
Edexcel IGCSE Geography 复习笔记 4.1.2 Location of Economic Sectors Factors Influencing Location of Economic Sectors Every type of economic activity has a particular location The location is affect...
