11.   Critics say the factory poses a potential threat to the environment.

12.   The first practical step towards reducing the potential threat of the autonomous power of the political organizations was, in fact, military in nature.

13.   The only protection against this potential threat of competition is afforded by firms charging prices equal to marginal costs and earning only normal profit.

14.   And the success of actions in these circumstances would serve to reduce the potential long-term threat associated with the event.

15.   Waorani Indian land in eastern Ecuador is under potential threat from the construction of an oil road and pipeline by the Dallas-based Maxus company.

16.   The scientists warn of the potential threat to towns, beaches, golf courses, marinas and nature reserves along the coast.

17.   A new motorway crossing, now being considered by the Department of Transport, and the Channel Tunnel rail link are also potential threats to the remaining natural habitat.

18.   Friends of the Earth Cymru warned new Welsh Secretary John Redwood of the potential environmental threats posed by oil and gas drilling.

19.   Friends of the Earth Cymru warned new Welsh Secretary, John Redwood, of the potential environmental threats posed by oil and gas drilling.

20.   Already animal-rights activists and environmentalists have expressed concern about the potential threat to the environment.