| ecological disaster | 5.13 | It also raises the threat of ecological disaster. | ||
| ecological damage | 3.88 | Ecological damage reported in Saba. | ||
| ecological balance | 2.44 | ...the ecological balance of nature. | ||
| ecological problem | 2.37 | JORDAN FACES many ecological problems. | ||
| ecological group | 1.91 | Some ecological groups are responding by trying to create more preserves. | ||
| ecological catastrophe | 1.38 | The oil spill will be an ecological catastrophe. | ||
| ecological concern | 1.38 | Then there are ecological concerns. | ||
| ecological system | 1.12 | You develop a perfect ecological system. | ||
| ecological niche | 0.99 | Old ecological niches were destroyed in the process and new ones opened up. | ||
| ecological crisis | 0.86 | An ecological crisis proved even more dramatic. | ||
| ecological effect | 0.86 | Already, there are signs of far-reaching ecological effects. | ||
| ecological issue | 0.79 | Ecological issues are well-covered in four chapters. | ||
| ecological devastation | 0.72 | They speak of ecological devastation. | ||
| ecological health | 0.72 | Spiders also make good indicators of the ecological health of an area. | ||
| ecological impact | 0.72 | However, he played down the ecological impact. | ||
| ecological threat | 0.72 | The leaks pose no ecological threat because the thin layer of oil evaporates quickly. | ||
| ecological movement | 0.66 | He was involved in ecological movements and an anti-violence campaign called Viva Rio. | ||
| ecological organisation | 0.66 | The study was carried out together with the Norwegian ecological organisation Bellona. | ||
| ecological havoc | 0.59 | A dam on the Danube River wreaks ecological havoc. | ||
| ecological risk | 0.59 | In addition, the plant may pose broader ecological risks. |