21.   The work of managing a natural environment is inescapably a work of local knowledge.

22.   There was also an environmental objective - to maintain a proper balance between human needs and the natural environment.

23.   This agreement is unique within the United Kingdom and demonstrates that trade, industry and commerce can live together with the natural environment.

24.   This fact underscores a point that is central to any discussion of how population growth impinges on the natural environment.

25.   This includes agricultural data, socio-economic data and data on the natural environment.

26.   Vast areas of Rum have been fenced off for century-long experiment to re-create the natural woodland environment.

27.   We recognize this when we talk about the punitive contingencies in the natural environment.

28.   We must preserve our natural environment.

29.   There is little assessment of the damage to the natural environment.

30.   One change in the natural environment will beget others.