| 41. | Gullies and low mountains make human intervention that much harder.
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| 42. | Human intervention looks microscopic, compared to the natural forces at work in a tornado.
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| 43. | Slashdot operates with a minimum of human intervention yet gives visitors the opposite impression.
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| 44. | It needs perpetual human intervention, as these creatures stay on the edge of extinction.
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| 45. | Most systems now require some human intervention when a previously unknown virus is found.
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| 46. | But experts also attribute the separation to human intervention.
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| 47. | However, the worldwide spread of the virus may be yielding at last to human intervention.
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| 48. | But down in Florida, there's too much human intervention.
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| 49. | Some systems may include an element of human intervention.
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| 50. | That's too fast for human intervention to cope with.
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