21.   Demand for copper is falling as summer in North America takes hold, when factories close or reduce output.

22.   Demand for copper tends to weaken in the northern hemisphere summer as factories that use the metal close or reduce output for routine maintenance.

23.   Elsewhere, wheat futures rose amid expectations that cold weather moving into winter wheat-growing areas could reduce output during a time of improving export demand.

24.   Estimates are that it will be much cheaper for a country to absorb pollution than to reduce the output of these gases.

25.   Factories are also shutting down or reducing output as they find themselves unable to deliver goods and services to customers or receive raw materials.

26.   Experts blame the increase on refinery problems in Northern California and a vow by oil-producing countries to reduce their output of crude oil.

27.   Fewer working days in those two months and production halts as factories carried out annual maintenance work also reduced output.

28.   Higher market interest rates will weigh on demand, Broaddus told members of the National Economists Club, while a slowdown in inventory rebuilding will reduce output by manufacturers.

29.   Hot weather also reduces output from cows and inhibits the growth of swine and other animals bred for meat.

30.   Ice on the rotors can sharply reduce power output, forcing Zond to take special precautions such as painting the blades black to absorb heat.