| salvaging(noun, nature, environment, earth, planet) |
| recycling(noun, nature, environment, earth, planet) |
| renewable resource(expression, supply, reserve, stock, margin) |
| resource(noun, supply, reserve, stock, margin) |
| utilise(verb, take, use, apply, employ) |
| utilize(verb, take, use, apply, employ) |
| apply(verb, take, use, employ, utilize) |
| depletable resource(expression, supply, reserve, stock, margin) |
| natural resource management(expression, supply, reserve, stock, margin) |
| resource availability(expression, supply, reserve, stock, margin) |
| resource balance(expression, supply, reserve, stock, margin) |
| resource base(expression, supply, reserve, stock, margin) |
| shared resource(expression, supply, reserve, stock, margin) |
| suplly(noun, supply, reserve, stock, margin) |
| use(verb, take, apply, employ, utilize) |
| waste(noun, nature, environment, earth, planet) |
| environment(noun, nature, earth, planet) |
| margin(noun, supply, reserve, stock, supplies) |
| non-renewable resource(expression, supply, reserve, stock, margin) |
| reserve(noun, supply, stock, margin, supplies) |