Basic General Knowledge
Deforestation in the uplands may cause pollution in rivers through

erosion and silting
leaching of salts
increased discharge rate
inflow of forest material

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Basic General Knowledge
The regional economic commissions of the Economic and Social Council (UNO) are

All of these
ECWA (Economic Commission for Western Asia) and ECLA
ECLA (Economic Commission for Latin America) and ECA (Economic Commission for Africa)
ECE (Economic Commission of Europe) and ESCAP (Economic and Social Commission for Asia)

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