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1 - ecofashion
2 - yoghurt
3 - plastics
4 - playpumps
5 - organiccotton
6 - windpower
7 - maasai
8 - organicbaby
9 - soap
10 - sheabutter


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calcium a metallic element (symbol: Ca) needed for strong bones and teeth 
carbon monoxide a poisonous gas (symbol: CO) formed by the incomplete combustion (burning) of carbon compounds (eg coal or oil). Complete combustion produces the non-poisonous carbon dioxide (CO2) 
catalyst something that makes a chemical reaction happen more quickly without itself being changed 
caustic a substance that can corrode or burn away other substances by chemical actionespecially a strong alkali 
cellulose the main substance in the cell walls of plants 
centrifugal a force which tends to throw matter away from the centre when being spun 
chromium a non-reactive metal (symbol: Cr) used to form a protective coating on other metals 
co-operative an organisation that is owned and run by its members with profits shared between them 
commercial activities relating to trade 
compost manure, usually of organic origin 
conserve to keep for future use 
contamination the process of polluting or spoiling something 
copyright to secure the legal right to reproduce work 
crude oil oil as it comes out of the Earth's crust, before it has been processed or refined for use 
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Practical Action - Technology challenging povertyEuropean Commission - Department for International Development

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