At CPI O Cruce de Cerceda (Spain), students learn basic skills about how to sample and monitor a river ecosistem. Water analysis, vegetal species identification and macroinvertebrates in water were […]
At CPI O Cruce de Cerceda (Spain), students learn basic skills about how to sample and monitor a river ecosistem. Water analysis, vegetal species identification and macroinvertebrates in water were […]