Its aim is to decrease per capita consumption in the UK, and to build a strong social, political, and economic case for water efficiency.

These will decrease regional consumption of petroleum, improve air quality, create a stronger, more diverse energy portfolio for the region, while setting an example for the nation.

"We were hoping a dramatic increase would decrease consumption," Mr. Fishman said.

The sustainable income is the amount a person or an economy can consume during one period without decreasing his or her consumption during the next period.

Oil companies and car makers agree that recent decades have demonstrated that the most effective way to decrease consumption is to increase the price.

It would decrease consumption not based on one's ability to pay but across the board.

But the only route to surpluses is to decrease consumption and imports and step up investment and exports.

This change decreased consumption as well as crash fatalities.

Taylor Nelson Sofres, a marketing research and information company, has found steadily decreasing per capita consumption among teenagers 13 to 17 in the last three years.

Q. Does the law address ways to decrease car-fuel consumption?