Soil is a mixture of tiny particles of rock, dead plants and animals, air and water. Different soils have different properties depending on their composition. Sandy soil is pale coloured and has ...

State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China School of Environment, Hangzhou ...

The data displayed for this chart goes back to 1994, however we hope to be able to offer deeper historic information at a future point ...

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