1. Can we develop simple and cheap alternatives to over-exploitation?

2. Beluga populations are also in many places suspected to be at dangerous levels after years of overexploitation.

3. Whole ecosystems can also be affected by over-exploitation.

4. More than a century of groundwater over-exploitation in Vietnam has drawn the water table down and, with it[http://Sentencedict.com], arsenic.

5. Over-exploitation of marine living resources, climate change, and pollution from hazardous materials and activities all pose a grave threat to the marine environment.

6. It follows that over-exploitation is also the main cause of the decline in natural species of ocean fishery.

7. We have destroyed our own fish-stocks by over-exploitation - and now we have moved on to theirs.

8. The heavy over-exploitation of the groundwater resources in causing huge environmental damae.

9. By taxing about some over-exploitation populations how to restore optimal population level is moderately studied.

10. However, the fact is that the over-exploitation of Earth has already done harm to our planet and may even result in an ecological disaster.

11. Those opposed to whaling focus on its inherent cruelty, the non-essential nature of whale products, and the danger of over-exploitation.

12. The main reasons of worsening marine climate are the increase of global greenhouse effect, over-exploitation in urban development and low standard of flood control projects.

13. "Other key factors are land subsidence caused by human activities, including over-exploitation of groundwater and massive construction of high buildings in coastal areas, " Liu said.

14. The mouth of the river was beginning to silt up—a powerful symbol of over-exploitation.

15. However, the coupling degree increased rapidly, with an average annual increment of 4.89 degrees. From 2008, Hunan Province shall enter the period of over-exploitation.

16. Southeast Asia, for example, is mentioned as a place where over-exploitation is rampant.

17. The situation is especially severe in rural areas because of the over-exploitation of water resources, arbitrary emissions of waste water and the abuse of fertilizers and pesticides.

18. Under the immense population pressure, serious soil erosion emerged because of the over-exploitation of natural resources in the Southern mountainous areas in the Qing dynasty.

19. The main reasons of groundwater descending are irrational distribution of groundwater exploitation and over-exploitation.

20. Bohai Sea sediment environment is changing by over-influx of terrigenous sediment and over-exploitation in Bohai Sea surrounding areas.

21. Many of the best-documented cases of individual species being driven to extinction or near-extinction by humans are those of over-exploitation.

22. Multiple factors have contributed to the demise, including logging, agricultural land conversion, over-exploitation, population growth, pollution and the impact of invasive alien species.

23. After seven years of drought, and many more years of over-exploitation and pollution, he argued that the only hope of restoring the river to health lies in a complete overhaul of how it is managed.