IB DP Biology: HL復(fù)習(xí)筆記2.2.2 Fatty Acids
Fatty Acids: Types Triglycerides are a form of lipid, made up of one molecule of?glycerol?with three?fatty acids?attached to it These fatty acids have?long hydrocarbon ‘tails’ Fatty acids occur in?...
Edexcel IGCSE Geography 復(fù)習(xí)筆記 4.3.3 Management of Energy Sources
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 4.3.2 Types of Energy Sources
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 4.3.1 Energy Demand and Production
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 4.2.3 Relationship of Population on Resources
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 4.2.2 Informal Employment
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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%...
IB DP Biology: HL復(fù)習(xí)筆記2.2.1 Carbohydrates
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 復(fù)習(xí)筆記 4.2.1 Impacts of Economic Sectors
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 4.1.3 Changes in Economic Sectors
Edexcel IGCSE Geography 復(fù)習(xí)筆記 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...
