1.   But if it comes to a choice, I choose forests as a power source over dams that flood forests.

2.   First, you need to turn off the power source.

3.   Rather, it is a power source sufficient for the needs of the propellant factory.

4.   Soon entrepreneurs of every stripe thought of ways to put this new power source to work.

5.   Technologically, capitalism needed an inanimate power source to which large amounts of equipment could be attached.

6.   Then each Girl put her heels into a small square on the stage floor, connecting up with the power source.

7.   The college had its own power source.

8.   So, they generally run on highly radioactive power sources, which are dangerous even during launch.

9.   The advantages of the bound book form is that they are hughly portable and do not need a power source.

10.   An American scientist has invented a fuel cell which he claims can store hydrogen safely, thus making possible its commercial use as a power source.