31.   He demonstrated the plants convert the energy of sunlight into biological forms and in doing so, liberate oxygen.

32.   Many Hindus, Gandhi among them, believe abstinence is a way to convert sexual energy into spiritual energy.

33.   When this basal energy is converted into higher forms by the practice of yoga, it helps improve all brain functions.

34.   RTGs are compact, self-contained power sources that convert radioactive energy into electricity.