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| Environmental awareness (2) |
| Sensibilización ambiental (2) |
| Tratamiento de desechos (2) |
| Waste treatment (2) |
| Educación ambiental (1) |
| Eliminación de desechos (1) |
| Environmental education (1) |
| Environmental ethics (1) |
| Etica ambiental (1) |
| Waste disposal (1) |