| feedlot pollution(expression, nature, environment, issue, degradation) |
| flood(noun, nature, environment, issue, degradation) |
| fresh water depletion(expression, nature, feature, environment, degradation) |
| global warming(expression, nature, environment, issue, degradation) |
| human overpopulation(expression, nature, feature, environment, degradation) |
| industrial pollution(expression, nature, environment, issue, degradation) |
| land disturbance(expression, nature, environment, issue, degradation) |
| landfill(noun, nature, environment, issue, degradation) |
| landslide(noun, nature, environment, issue, degradation) |
| loss of biodiversity(expression, nature, environment, issue, degradation) |
| man-made pollution(expression, nature, environment, issue, degradation) |
| marine pollution(expression, nature, environment, issue, degradation) |
| natural cause(expression, nature, environment, issue, degradation) |
| natural disaster(expression, nature, environment, issue, degradation) |
| noise pollution(expression, nature, environment, issue, degradation) |
| ocean acidification(expression, nature, environment, issue, degradation) |
| ocean pollution(expression, nature, environment, issue, degradation) |
| over-consumption(expression, nature, environment, issue, degradation) |
| over-population(expression, nature, environment, issue, degradation) |
| over-production(expression, nature, environment, issue, degradation) |