| 41. | The largest has a diameter of just 3 nanometers, or billionths of a meter.
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| 42. | The trillion cells require less than a billionth of a watt of power to operate.
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| 43. | Hormel expects to turn out its 6 billionth sometime between June 29 and July 3.
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| 44. | In 1973 the one billionth barrel of oil was pumped from the nearby oil field.
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| 45. | The billionth tree, an African Olive, was planted in Ethiopia in November 2007.
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| 46. | It is one ten-billionth of a meter, not a billionth of a meter.
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| 47. | It is one ten-billionth of a meter, not a billionth of a meter.
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| 48. | Asked why ( for apparently the billionth time ), her answer is almost a shrug.
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| 49. | Their weight was measured in " nanograms, " or billionths of a gram.
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| 50. | The sensors can register as little as a nanogram, or one billionth of a gram.
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