21.  The plants require adequate water during the growing season.

22.  The tower system requires less water and has fewer environmental hazards because less heated water is put back into the original source.

23.  The worst drought in two generations has crippled efforts to grow any crop, an exception being poppies, which require less water.

24.  They fit just about anywhere and require little water.

25.  Those who require water of special purity should follow the advice of a doctor or local health official.

26.  Typically, hemlock stands grow along streams, and the shade they provide keeps the water temperature right for trout and other aquatic life that require cold water.

27.  Panij said his office has been calling on local farmers to use cultivation techniques or concentrate on crops that require less water.

28.  Arlacchi said opium is a good crop for bad times because it requires little water and can be sold easily.

29.  Farmers are resisting suggestions to change to crops that require less water and can be planted in winter.

30.  More natural medicines will be found, and science will develop food crops that will require less water and pesticides, Ambrose said.