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The materials on this site are no longer being updated. For Practical Action's main school site go to www.practicalaction.org/schools




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

Glossary

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herbicides a chemical substance used to kill plants (especially weeds) or to slow their growth 
herbivores an animal that feeds on grass and other plants 
HIV (Human Immunodeficiency Virus) the virus which causes AIDS 
horticulture the study or activity of cultivating plants in gardens 
hosho a traditional Zimbabwean musical instrument. A gourd filled with seed or pebbles that is shaken 
humanitarian involved in improving people's lives and reducing suffering 
humidity moisture or dampness in the atmosphere
Relative Humidity (RH) is a measure of the relationship between the water content of the air at a certain temperature and the water content of saturated air at the same temperature 
hydraulic operated by the movement of fluid through pipes 
hygiene to keep clean in order to prevent diseases and maintain health 
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Practical Action - Technology challenging povertyEuropean Commission - Department for International Development

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