1.   But improved communications, technological change, and increased demand led to concentration of food production in fewer and greater units.

2.   Firstly, undertaking the research represented one of the only positive steps available to respond to such an increased demand.

3.   Increased demand for its road, rail and sea container fleets during the first half helped boost the latest figures.

4.   Many older mains also required reinforcement to raise their capacity to match increased demand.

5.   Sometimes the causes are external to you-oppressive managers, increased demands, or too little opportunity for autonomy.