In many country nowadays, electricity, gas and water are necessities, companies which produce household goods realize that consumers want products that will not only work effective...

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In many country nowadays, electricity, gas and water are necessities, companies which produce household goods realize that consumers want products that will not only work effectively, (11)_____________save money.

In North America, household lighting accounts for 10% to 15% of the electricity bill. However, this amount can be (12)___________by replacing an ordinary 100-watt light bulb with an energy-saving bulb. Consumers can save  21 per bulb.

In Europe, there is a labeling scheme for refrigerators, freezers and washing machines, the labels tell the consumers (13)_________ energy efficiency each model has (14)___________ with other appliances in the same category. The final result is  that these innovations will save money as well as conserve the Earth’s (15)___________