Glossary

At the end of each definition in this Glossary there is a number in brackets. This indicates the number of the Study Session where the term is first used in this OpenWASH module.


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L

land cover

the observed biophysical cover on the Earth's surface, e.g. grassland, forest, croplands (6)



land use

the ways in which humans make use of land; the arrangements, activities and inputs by people to produce, change or maintain a certain land cover type (6)



La Niña

climate pattern caused by unusually cool temperatures in the Pacific Ocean (10)



leachate

highly concentrated liquid pollutant that seeps from solid wastes into soil (7)


leaching

process whereby liquids seep out or are washed out by rain into the soil below (1)



life expectancy

average number of years that a person may expect to live (3)



liquid waste

human excreta (both faeces and urine), industrial wastewaters, and other forms of waste from water-using activities (7)




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