21.  This could be achieved through genetic modifications of crops, increased use of biological controls, such as natural predators, and a planned approach to crop rotation.

22.  The GAO is concerned about the increased use of antibiotics to treat the higher incidence of mastitis in cows which have been fed with BST.

23.  Increased use of chemical pesticides is causing a steep decline in the numbers of song thrushes in Britain, according to a survey by the British Trust for Ornithology.

24.  A key objective of the projects is to show how carbon dioxide emissions would be reduced by an increased use of bus transport.

25.  Merseytravel is convinced that increased use of the Fast-tag system will mean more efficient traffic flows.

26.  Courtaulds Protective Coatings is investing heavily in research to devise products based on the Ecotech initiative which promotes the increased use of environmentally sensitive coatings.

27.  An increased use of the Suez is the result of a shift in Asian manufacturing.

28.  And health care workers have been alarmed in recent years by the increased use of mercury among Caribbean residents.

29.  And increased use of computer technology over the past decade has driven innovations and growth by medical device companies in the state.

30.  And the effects of increased Internet use may go even further.