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DROUGHT (4) |
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DESERTIFICATION (28) |
ECOSYSTEMS (28) |
LAND DEGRADATION (27) |
ENVIRONMENTAL DEGRADATION (26) |
ARID ZONES (9) |
REFORESTATION (5) |
DROUGHT (4) |
CLIMATE CHANGE (3) |
SAND DUNES (3) |
DROUGHT CONTROL (2) |